I'm getting a launch failure that seems to be due to missing version information somewhere. Of course, I'll give the full log below so you can verify, but the lines of interest seem to be:

2013-06-05 19:50:58 [iNFO] [ForgeModLoader] Forge Mod Loader version missing.missing.missing.missing for Minecraft missing loading
...
2013-06-05 19:50:58 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/deobfuscation_data_missing.zip
2013-06-05 19:50:58 [sEVERE] [ForgeModLoader] There was a problem downloading the file deobfuscation_data_missing.zip automatically. Perhaps you have an environment without internet access. You will need to download the file manually or restart and let it try again
...

 

I tried to to bypass the problem by download that file directly and was not surprised when it didn't exist on the server. I backed up to fmllibs and grabbed deobfuscation_data_1.5.2.zip, as that matches the version of my minecraft client, and renamed it to deobfuscation_data_missing.zip to match the filename that FML is looking for and tried again, not knowing that FML checked checksums....

2013-06-05 20:05:35 [sEVERE] [ForgeModLoader] Error details
java.lang.RuntimeException: The file deobfuscation_data_missing.zip was found in your lib directory and has an invalid checksum 446e55cd986582c70fcf12cb27bc00114c5adfd9 (expecting deadbeef) - it is unlikely to be the correct download, please move it out of the way and try again.

No surprise there, given that the checksum is checked.

 

I tried googling those log entries to see if there was perhaps something I was doing wrong and came up empty. However, I did notice that every other log I've looked at pulls a version of deobfuscation_data_*.zip that matches the minecraft version being used, confirming my suspicion that FML tries to decide what version of the file to grab by the minecraft version, and since mine just gets "missing", it obviously fails. I have tried grabbing a clean minecraft.jar via the official launcher just in case, still no luck.

 

I'm using:

Magic Launcher 1.1.4

Minecraft Forge 7.8.0.723-universal for Minecraft 1.5.2

 

While troubleshooting, I've only added Forge to the mod list in Magic Launcher, and disabled all my external mods.

 

 

Log from before downloading:

 

2013-06-05 19:50:58 [iNFO] [ForgeModLoader] Forge Mod Loader version missing.missing.missing.missing for Minecraft missing loading

2013-06-05 19:50:58 [iNFO] [ForgeModLoader] Java is OpenJDK 64-Bit Server VM, version 1.7.0_21, running on Linux:amd64:3.9.4-1-ARCH, installed at /usr/lib/jvm/java-7-openjdk/jre

2013-06-05 19:50:58 [FINE] [ForgeModLoader] Java classpath at launch is /home/mark/.minecraft/minecraft.jar

2013-06-05 19:50:58 [FINE] [ForgeModLoader] Java library path at launch is bin/natives

2013-06-05 19:50:58 [FINE] [ForgeModLoader] Enabling runtime deobfuscation

2013-06-05 19:50:58 [FINEST] [ForgeModLoader] All core mods are successfully located

2013-06-05 19:50:58 [FINEST] [ForgeModLoader] Discovering coremods

2013-06-05 19:50:58 [FINEST] [ForgeModLoader] Found library file argo-small-3.2.jar present and correct in lib dir

2013-06-05 19:50:58 [FINEST] [ForgeModLoader] Found library file guava-14.0-rc3.jar present and correct in lib dir

2013-06-05 19:50:58 [FINEST] [ForgeModLoader] Found library file asm-all-4.1.jar present and correct in lib dir

2013-06-05 19:50:58 [FINEST] [ForgeModLoader] Found library file bcprov-jdk15on-148.jar present and correct in lib dir

2013-06-05 19:50:58 [FINEST] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/deobfuscation_data_missing.zip

2013-06-05 19:50:58 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/deobfuscation_data_missing.zip

2013-06-05 19:50:58 [sEVERE] [ForgeModLoader] There was a problem downloading the file deobfuscation_data_missing.zip automatically. Perhaps you have an environment without internet access. You will need to download the file manually or restart and let it try again

 

2013-06-05 19:50:58 [FINEST] [ForgeModLoader] Found library file scala-library.jar present and correct in lib dir

2013-06-05 19:50:58 [sEVERE] [ForgeModLoader] There were errors during initial FML setup. Some files failed to download or were otherwise corrupted. You will need to manually obtain the following files from these download links and ensure your lib directory is clean.

2013-06-05 19:50:58 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/argo-small-3.2.jar

2013-06-05 19:50:58 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/guava-14.0-rc3.jar

2013-06-05 19:50:58 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/asm-all-4.1.jar

2013-06-05 19:50:58 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/bcprov-jdk15on-148.jar

2013-06-05 19:50:58 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/deobfuscation_data_missing.zip

2013-06-05 19:50:58 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/scala-library.jar

2013-06-05 19:50:58 [sEVERE] [ForgeModLoader] <===========>

2013-06-05 19:50:58 [sEVERE] [ForgeModLoader] The following is the errors that caused the setup to fail. They may help you diagnose and resolve the issue

2013-06-05 19:50:58 [sEVERE] [ForgeModLoader] A download error occured

2013-06-05 19:50:58 [sEVERE] [ForgeModLoader] <<< ==== >>>

2013-06-05 19:50:58 [sEVERE] [ForgeModLoader] The following is diagnostic information for developers to review.

2013-06-05 19:50:58 [sEVERE] [ForgeModLoader] Error details

java.lang.RuntimeException: A download error occured

at cpw.mods.fml.relauncher.RelaunchLibraryManager.downloadFile(RelaunchLibraryManager.java:548)

at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:165)

at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:172)

at cpw.mods.fml.relauncher.FMLRelauncher.relaunchClient(FMLRelauncher.java:104)

at cpw.mods.fml.relauncher.FMLRelauncher.handleClientRelaunch(FMLRelauncher.java:38)

at net.minecraft.client.Minecraft.main(Minecraft.java:2237)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

at magic.launcher.Launcher.main(Unknown Source)

Caused by: java.io.FileNotFoundException: http://files.minecraftforge.net/fmllibs/deobfuscation_data_missing.zip

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)

at java.lang.reflect.Constructor.newInstance(Constructor.java:525)

at sun.net.www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1674)

at sun.net.www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1672)

at java.security.AccessController.doPrivileged(Native Method)

at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1670)

at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1243)

at cpw.mods.fml.relauncher.RelaunchLibraryManager.downloadFile(RelaunchLibraryManager.java:532)

... 10 more

Caused by: java.io.FileNotFoundException: http://files.minecraftforge.net/fmllibs/deobfuscation_data_missing.zip

at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1623)

at sun.net.www.protocol.http.HttpURLConnection.getHeaderField(HttpURLConnection.java:2677)

at java.net.URLConnection.getHeaderFieldLong(URLConnection.java:639)

at java.net.URLConnection.getContentLengthLong(URLConnection.java:511)

at java.net.URLConnection.getContentLength(URLConnection.java:495)

at cpw.mods.fml.relauncher.RelaunchLibraryManager.downloadFile(RelaunchLibraryManager.java:531)

... 10 more

2013-06-05 19:51:00 [iNFO] [sTDERR] java.lang.reflect.InvocationTargetException

2013-06-05 19:51:00 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

2013-06-05 19:51:00 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

2013-06-05 19:51:00 [iNFO] [sTDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

2013-06-05 19:51:00 [iNFO] [sTDERR] at java.lang.reflect.Method.invoke(Method.java:601)

2013-06-05 19:51:00 [iNFO] [sTDERR] at magic.launcher.Launcher.main(Unknown Source)

2013-06-05 19:51:00 [iNFO] [sTDERR] Caused by: java.lang.RuntimeException: java.lang.RuntimeException: A fatal error occured and FML cannot continue

2013-06-05 19:51:00 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:192)

2013-06-05 19:51:00 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.relaunchClient(FMLRelauncher.java:104)

2013-06-05 19:51:00 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.handleClientRelaunch(FMLRelauncher.java:38)

2013-06-05 19:51:00 [iNFO] [sTDERR] at net.minecraft.client.Minecraft.main(Minecraft.java:2237)

2013-06-05 19:51:00 [iNFO] [sTDERR] ... 5 more

2013-06-05 19:51:00 [iNFO] [sTDERR] Caused by: java.lang.RuntimeException: A fatal error occured and FML cannot continue

2013-06-05 19:51:00 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:261)

2013-06-05 19:51:00 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:172)

2013-06-05 19:51:00 [iNFO] [sTDERR] ... 8 more

2013-06-05 19:54:57 [iNFO] [sTDOUT] No visible frames left, exit()

2013-06-05 19:54:57 [iNFO] [sTDOUT] Restoring disabled mods: mods

 

 

 

Logs after downloading file and renaming to match what FML was looking for:

 

 

2013-06-05 20:05:35 [iNFO] [ForgeModLoader] Forge Mod Loader version missing.missing.missing.missing for Minecraft missing loading

2013-06-05 20:05:35 [iNFO] [ForgeModLoader] Java is OpenJDK 64-Bit Server VM, version 1.7.0_21, running on Linux:amd64:3.9.4-1-ARCH, installed at /usr/lib/jvm/java-7-openjdk/jre

2013-06-05 20:05:35 [FINE] [ForgeModLoader] Java classpath at launch is /home/mark/.minecraft/minecraft.jar

2013-06-05 20:05:35 [FINE] [ForgeModLoader] Java library path at launch is bin/natives

2013-06-05 20:05:35 [FINE] [ForgeModLoader] Enabling runtime deobfuscation

2013-06-05 20:05:35 [FINEST] [ForgeModLoader] All core mods are successfully located

2013-06-05 20:05:35 [FINEST] [ForgeModLoader] Discovering coremods

2013-06-05 20:05:35 [FINEST] [ForgeModLoader] Found library file argo-small-3.2.jar present and correct in lib dir

2013-06-05 20:05:35 [FINEST] [ForgeModLoader] Found library file guava-14.0-rc3.jar present and correct in lib dir

2013-06-05 20:05:35 [FINEST] [ForgeModLoader] Found library file asm-all-4.1.jar present and correct in lib dir

2013-06-05 20:05:35 [FINEST] [ForgeModLoader] Found library file bcprov-jdk15on-148.jar present and correct in lib dir

2013-06-05 20:05:35 [FINEST] [ForgeModLoader] Found library file scala-library.jar present and correct in lib dir

2013-06-05 20:05:35 [sEVERE] [ForgeModLoader] There were errors during initial FML setup. Some files failed to download or were otherwise corrupted. You will need to manually obtain the following files from these download links and ensure your lib directory is clean.

2013-06-05 20:05:35 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/argo-small-3.2.jar

2013-06-05 20:05:35 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/guava-14.0-rc3.jar

2013-06-05 20:05:35 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/asm-all-4.1.jar

2013-06-05 20:05:35 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/bcprov-jdk15on-148.jar

2013-06-05 20:05:35 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/deobfuscation_data_missing.zip

2013-06-05 20:05:35 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/scala-library.jar

2013-06-05 20:05:35 [sEVERE] [ForgeModLoader] <===========>

2013-06-05 20:05:35 [sEVERE] [ForgeModLoader] The following is the errors that caused the setup to fail. They may help you diagnose and resolve the issue

2013-06-05 20:05:35 [sEVERE] [ForgeModLoader] The file deobfuscation_data_missing.zip was found in your lib directory and has an invalid checksum 446e55cd986582c70fcf12cb27bc00114c5adfd9 (expecting deadbeef) - it is unlikely to be the correct download, please move it out of the way and try again.

2013-06-05 20:05:35 [sEVERE] [ForgeModLoader] <<< ==== >>>

2013-06-05 20:05:35 [sEVERE] [ForgeModLoader] The following is diagnostic information for developers to review.

2013-06-05 20:05:35 [sEVERE] [ForgeModLoader] Error details

java.lang.RuntimeException: The file deobfuscation_data_missing.zip was found in your lib directory and has an invalid checksum 446e55cd986582c70fcf12cb27bc00114c5adfd9 (expecting deadbeef) - it is unlikely to be the correct download, please move it out of the way and try again.

at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:193)

at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:172)

at cpw.mods.fml.relauncher.FMLRelauncher.relaunchClient(FMLRelauncher.java:104)

at cpw.mods.fml.relauncher.FMLRelauncher.handleClientRelaunch(FMLRelauncher.java:38)

at net.minecraft.client.Minecraft.main(Minecraft.java:2237)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

at magic.launcher.Launcher.main(Unknown Source)

2013-06-05 20:05:38 [iNFO] [sTDERR] java.lang.reflect.InvocationTargetException

2013-06-05 20:05:38 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

2013-06-05 20:05:38 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

2013-06-05 20:05:38 [iNFO] [sTDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

2013-06-05 20:05:38 [iNFO] [sTDERR] at java.lang.reflect.Method.invoke(Method.java:601)

2013-06-05 20:05:38 [iNFO] [sTDERR] at magic.launcher.Launcher.main(Unknown Source)

2013-06-05 20:05:38 [iNFO] [sTDERR] Caused by: java.lang.RuntimeException: java.lang.RuntimeException: A fatal error occured and FML cannot continue

2013-06-05 20:05:38 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:192)

2013-06-05 20:05:38 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.relaunchClient(FMLRelauncher.java:104)

2013-06-05 20:05:38 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.handleClientRelaunch(FMLRelauncher.java:38)

2013-06-05 20:05:38 [iNFO] [sTDERR] at net.minecraft.client.Minecraft.main(Minecraft.java:2237)

2013-06-05 20:05:38 [iNFO] [sTDERR] ... 5 more

2013-06-05 20:05:38 [iNFO] [sTDERR] Caused by: java.lang.RuntimeException: A fatal error occured and FML cannot continue

2013-06-05 20:05:38 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:261)

2013-06-05 20:05:38 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:172)

2013-06-05 20:05:38 [iNFO] [sTDERR] ... 8 more

2013-06-05 20:21:59 [iNFO] [sTDOUT] No visible frames left, exit()

2013-06-05 20:21:59 [iNFO] [sTDOUT] Restoring disabled mods: mods

 

 

Somehow fmlversion.properties is not being added to your minecraft.jar.

Try manually adding everything to your jar.

Yup. It works as expected after manually injecting Forge into minecraft.jar. And Magic Launcher still gets along with the modded jar, allowing me to set up profiles, so that's good.

 

Curious that it wasn't able to inject fmlversion.properties automatically though. Maybe it has something to do with linux file permissions? But at that point, it would be a problem with Magic Launcher then, wouldn't it? I might head over to them if I decide I care enough or hear of others starting to have this same problem. If I'm wrong and it is something on your end, feel free to contact me if I can be of any help.

 

Anyways, thank you much LexManos.