Cloudy

First of all, please use a more descriptive thread title so that people can help you better. Secondly, the "forge" profile you have - can you go into the options for the profile, and make sure it is using the "forge" version?

First of all, you are being very rude. You reported an issue - equivalent of opening a bug report and when you are told to open a technical support ticket you insist it is a bug, and that the forums can't help you. Do you not think that he is more qualified to see if something is a bug than you are, considering the countless hours he puts in of work in order to provide this for free? You should probably get that chip on your shoulder looked at. Second of all, calling someone who does something as a hobby project unprofessional for an action he took - after you started arguing with him is kinda silly. This isn't supposed to be "professional", and expecting professionalism is even more silly. You are not entitled to help with your issue, and it was cool of lex to point you in the direction of the support channel. Finally, and thankfully, your issue is simple to fix. Place the Minecraft server jar in the same folder as the forge jar. The Minecraft server jar is in effect a library used by the forge jar, and this error is indicative of the jar being missing or corrupt. To avoid issues like this in future, either install it locally and upload the files, or if you have access to the command line run the forge installer jar from there (for headless, use the --installServer command line option). I hope this helps

I've seen cases of people experiencing some tps issues purely because the gui for the server is showing. Can you try adding "nogui" without the quotation marks to the end of the batch file command and see if that helps any?

MCPC+ is not an official build of forge. You should probably take it up with the MCPC+ guys. Also, a 1.5.2 server is very old now - and as such would not get any support here anyway.

You have installed forge wrong. Looks like you deleted the com folder inside the JAR. Use a launcher like MultiMC to ease the installation pain.

No one picked up on the obvious fact that they are trying to install Redpower for 1.4.6 on Minecraft 1.5.1? In short: Redpower is not compatible with 1.5.1 yet.

Yeah... don't count on Risugami making his mod compatible with Forge. You will be best posting an issue on the FML github with a link to this thread, so cpw can look at it.

You're trying to use mods which are incompatible with 1.5.1 (one of them has a version of 1.5, and I assume doesn't use runtime de-obfuscation). That's why they aren't working.

I doubt it is the paulscode issue... You seem to be doing everything right (and it is usually a crash, not just a lack of sound) - however you can excuse us for immediately jumping to that conclusion, as most Mac users are completely incapable of installing forge properly. I looked at your log, and this line stands out: 2013-03-25 07:30:57 [iNFO] [sTDERR] Exception in thread "Resource download thread" javax.xml.parsers.FactoryConfigurationError: Provider org.apache.xerces.jaxp.DocumentBuilderFactoryImpl not found 2013-03-25 07:30:57 [iNFO] [sTDERR] at javax.xml.parsers.DocumentBuilderFactory.newInstance(DocumentBuilderFactory.java:129) 2013-03-25 07:30:57 [iNFO] [sTDERR] at net.minecraft.util.ThreadDownloadResources.run(ThreadDownloadResources.java:51) It appears that Minecraft is unable to download its sounds (bizarrely, they are downloaded in game the first time you run a version). Does the download work in vanilla Minecraft, without forge? If it does, an option may be to let the sounds download using vanilla Minecraft first, then install forge afterwards. I am unsure why anything org.apache is referenced as neither Forge nor Minecraft includes it. It appears that something in your Java setup (I do note it appears you're using a jdk) is referencing it.

The only reason mods for 1.4.6 worked for 1.4.7 was because it was a minor change. Things not working inbetween versions? Welcome to Minecraft modding. There is some progress made with runtime deobfuscation, but there will always be updates that break mods, and that is a fact of life. If you can't deal with it you shouldn't be modding your client.

Forge will continue, ceding ground to the official API when it covers stuff that forge already does.

Ignore what Magic Launcher says. It doesn't know about forge's access transformers.

but if you mod the render list wouldn't other entities of that type not be rendered? No? You will choose what conditions to call the original render function - it will only not render if you make it not render.

It wouldn't be too difficult to replace the player renderer with one which allows you to disable rendering completely, if certain conditions are met. You don't even need to use reflection, just replace it in the List.

While this would be a simple edit, it is unnecessary due to the texture changes in 1.5. Forge texture system won't even exist.

Try and reproduce it with just forge.

I see you have optifine installed. Does it happen without? What else do you have installed?

You're installing a client mod on the server.

This is causes by a mod author putting their mod in a sub folder inside the zip. If they packaged it correctly it would work fine. Additionally - check the install instructions: www.minecraftforum.net/topic/217587-147-mod-mumblelink-ml-smp-lan-mumble-realism-directional-voip/ It does state to unzip it.

Download http://files.minecraftforge.net/fmllibs/argo-2.25.jar and put in your jars/lib folder.

You're using MCPC ported mods on the client. There's no other way for that error to occur. Redownload non ported versions of the mods, and try again.

Update to forge 511.

Logs please!

To be honest, I'd recommend using a launcher such as MultiMC - not only will it help with setting up mods, it will also allow you to distribute the exact same instance between both computers without having to copy the Minecraft jar. That error is caused because of a file missing inside the jar.

Mod install issue. Please provide ForgeModLoader log.