1.15.2 forge wont install/open

[r0d3nt]

Hey so I'll get straight to the point. I've downloaded the latest java and the latest forge installer, but when I try and open the forge installer to start it up nothing happens. I've tried right clicking > open with > Java(TM) Platform SE binary and openJDK Platform binary, (Not sure what the difference is??) and an error comes up when I try both. Any help would be appreciated. 

[r0d3nt]

5 minutes ago, diesieben07 said:

Show the error.

You should however just be able to double-click jar files if Java is correctly installed.

I restarted my computer a second ago and now theres only one 'Open with' option, the JDK one. When I click it now, nothing happens. Not even an error?

[r0d3nt]

Oh, I have it again after the SE option came back up. Here's the error message.

Spoiler

 

 

[r0d3nt]

2 minutes ago, diesieben07 said:

And you cannot double-click the jar file?

When I double click it nothing opens, but an 'installer' notepad file is created.

 

[r0d3nt]

1 minute ago, diesieben07 said:

Post that file please.

Heres the contents:

Spoiler

JVM info: Oracle Corporation - 14.0.1 - 14.0.1+7
java.net.preferIPv4Stack=true
Found java version 14.0.1
Exception in thread "main" 
java.lang.RuntimeException: javax.imageio.IIOException: Can't create cache file!
    at net.minecraftforge.installer.InstallerPanel.getImage(InstallerPanel.java:151)
    at net.minecraftforge.installer.InstallerPanel.<init>(InstallerPanel.java:167)
    at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:169)
    at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:143)
Caused by: javax.imageio.IIOException: Can't create cache file!
    at java.desktop/javax.imageio.ImageIO.createImageInputStream(ImageIO.java:361)
    at java.desktop/javax.imageio.ImageIO.read(ImageIO.java:1359)
    at net.minecraftforge.installer.InstallerPanel.getImage(InstallerPanel.java:146)
    ... 3 more
Caused by: java.nio.file.AccessDeniedException: C:\PROGRA~1\KMSpico\temp\imageio3756690051383634372.tmp
    at java.base/sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:89)
    at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:103)
    at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:108)
    at java.base/sun.nio.fs.WindowsFileSystemProvider.newByteChannel(WindowsFileSystemProvider.java:235)
    at java.base/java.nio.file.Files.newByteChannel(Files.java:375)
    at java.base/java.nio.file.Files.createFile(Files.java:652)
    at java.base/java.nio.file.TempFileHelper.create(TempFileHelper.java:137)
    at java.base/java.nio.file.TempFileHelper.createTempFile(TempFileHelper.java:160)
    at java.base/java.nio.file.Files.createTempFile(Files.java:917)
    at java.desktop/javax.imageio.stream.FileCacheImageInputStream.<init>(FileCacheImageInputStream.java:102)
    at java.desktop/com.sun.imageio.spi.InputStreamImageInputStreamSpi.createInputStreamInstance(InputStreamImageInputStreamSpi.java:69)
    at java.desktop/javax.imageio.ImageIO.createImageInputStream(ImageIO.java:357)
    ... 5 more

 

[r0d3nt]

I'm using windows 10, if I understood the question,

[r0d3nt]

Just tried an older version of forge (1.14.4) and it does the same thing. Doesn't open by double clicking, gives me an error with SE.

[r0d3nt]

2 minutes ago, diesieben07 said:

This is why I asked, this is something you usually only see on very old versions of Windows...

Please try uninstalling Java completely and re-installing Java 8.

Ah I see. My dad built this computer since I'm not very good with stuff like this. I've reinstalled it, should I retry opening forge?

[r0d3nt]

3 minutes ago, diesieben07 said:

Yes

Just tried, it had the same result. After right clicking to 'open with' there were two SE options, one did nothing and one opened a confirmation, then the same error.

Heres the notepad file it created, if its any help.

Spoiler

JVM info: Oracle Corporation - 1.8.0_251 - 25.251-b08
java.net.preferIPv4Stack=true
Found java version 1.8.0_251
Exception in thread "main" 
java.lang.RuntimeException: javax.imageio.IIOException: Can't create cache file!
    at net.minecraftforge.installer.InstallerPanel.getImage(InstallerPanel.java:151)
    at net.minecraftforge.installer.InstallerPanel.<init>(InstallerPanel.java:167)
    at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:169)
    at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:143)
Caused by: javax.imageio.IIOException: Can't create cache file!
    at javax.imageio.ImageIO.createImageInputStream(Unknown Source)
    at javax.imageio.ImageIO.read(Unknown Source)
    at net.minecraftforge.installer.InstallerPanel.getImage(InstallerPanel.java:146)
    ... 3 more
Caused by: java.nio.file.AccessDeniedException: C:\PROGRA~1\KMSpico\temp\imageio6287466975152966870.tmp
    at sun.nio.fs.WindowsException.translateToIOException(Unknown Source)
    at sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
    at sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
    at sun.nio.fs.WindowsFileSystemProvider.newByteChannel(Unknown Source)
    at java.nio.file.Files.newByteChannel(Unknown Source)
    at java.nio.file.Files.createFile(Unknown Source)
    at java.nio.file.TempFileHelper.create(Unknown Source)
    at java.nio.file.TempFileHelper.createTempFile(Unknown Source)
    at java.nio.file.Files.createTempFile(Unknown Source)
    at javax.imageio.stream.FileCacheImageInputStream.<init>(Unknown Source)
    at com.sun.imageio.spi.InputStreamImageInputStreamSpi.createInputStreamInstance(Unknown Source)
    ... 6 more
 

 

Edited May 23, 2020 by r0d3nt

[r0d3nt]

12 minutes ago, diesieben07 said:

Try deleting this folder.

The error is gone now, but nothing's opening still.

[r0d3nt]

6 minutes ago, diesieben07 said:

Show the new installer.log.

Spoiler

JVM info: Oracle Corporation - 1.8.0_251 - 25.251-b08
java.net.preferIPv4Stack=true
Found java version 1.8.0_251
Exception in thread "main" 
java.lang.RuntimeException: javax.imageio.IIOException: Can't create cache file!
    at net.minecraftforge.installer.InstallerPanel.getImage(InstallerPanel.java:151)
    at net.minecraftforge.installer.InstallerPanel.<init>(InstallerPanel.java:167)
    at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:169)
    at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:143)
Caused by: javax.imageio.IIOException: Can't create cache file!
    at javax.imageio.ImageIO.createImageInputStream(Unknown Source)
    at javax.imageio.ImageIO.read(Unknown Source)
    at net.minecraftforge.installer.InstallerPanel.getImage(InstallerPanel.java:146)
    ... 3 more
Caused by: java.nio.file.NoSuchFileException: C:\PROGRA~1\KMSpico\temp\imageio5749467120708726576.tmp
    at sun.nio.fs.WindowsException.translateToIOException(Unknown Source)
    at sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
    at sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
    at sun.nio.fs.WindowsFileSystemProvider.newByteChannel(Unknown Source)
    at java.nio.file.Files.newByteChannel(Unknown Source)
    at java.nio.file.Files.createFile(Unknown Source)
    at java.nio.file.TempFileHelper.create(Unknown Source)
    at java.nio.file.TempFileHelper.createTempFile(Unknown Source)
    at java.nio.file.Files.createTempFile(Unknown Source)
    at javax.imageio.stream.FileCacheImageInputStream.<init>(Unknown Source)
    at com.sun.imageio.spi.InputStreamImageInputStreamSpi.createInputStreamInstance(Unknown Source)
    ... 6 more
 

 

[r0d3nt]

3 minutes ago, diesieben07 said:

For some reason the temp directory on your computer is configured to a path that doesn't allow Java to write to it.

I would say this is a configuration error.

 

You can run the installer from the command line using java -Djava.io.tmpdir=put temp directory here -jar installer file name

So this is reinstalling java?? sorry, im a tad confused. where should the temp directory be?

[r0d3nt]

4 minutes ago, diesieben07 said:

No, that is not re-installing Java.

The temp directory can be wherever you want, you can delete it afterwards.

I'm not sure if I did it correctly, but this came up:

Spoiler

 

 

[r0d3nt]

2 minutes ago, diesieben07 said:

You must type the complete file name, including file extension.

The same thing happened after i added .jar at the end. I'm not sure what the extension is if not .jar? It says in file explorer 'Executable jar file' what would I type for that?

[r0d3nt]

13 minutes ago, diesieben07 said:

Are you in the correct folder?

Aaah im sorry haha you're being extremely patient with me. My forge installer is just on my desktop if that's what you're meaning

 

edit: I think I understand you- my bad. I'm not sure where my temp is located

Edited May 23, 2020 by r0d3nt

[r0d3nt]

3 minutes ago, diesieben07 said:

If the installer is on your desktop then it makes sense that your previous attempt did not work, because there you were not looking at your desktop in the command line.

So what do I change in order for it to work?

[r0d3nt]

8 minutes ago, diesieben07 said:

Either move the installer into the folder that you have the command line pointing at or move into the correct folder in the command line (using the cd command).

The command i was using was 'java -Djava.io.tmpdir=desktop -jar forge-1.15.2-31.2.0-installer.jar' But it didn't work even though my file is on the desktop? I tried moving it to a folder on the desktop, and to a folder in my %appdata% > '.minecraft' folder and it had the same outcome. Is the command not typed right?

 

edit: I tried with 'java -Djava.io.tmpdir=%appdata^>.minecraft>mods -jar forge-1.15.2-31.2.0-installer.jar' and it said access denied.

Edited May 23, 2020 by r0d3nt

[r0d3nt]

I don't think I'm getting it right yet, my apologies. I don't really go near this stuff very often so I'm not sure how it's supposed to look. Either of these help?

 

Spoiler

 

I moved the forge installer to users\kevin, and theres ones on the desktop,

Edited May 23, 2020 by r0d3nt

[r0d3nt]

14 hours ago, diesieben07 said:

The first one doesn't make sense, because the jar file is not in C:\.

Please show the jar file being present in C:\users\kevin.

Here's the jar file in user\kevin. 

Spoiler

 

 

[r0d3nt]

5 minutes ago, diesieben07 said:

That's the launcher. You don't need that.

You need to use the installer.

Oh you're right, I didn't notice.

I tried the command after switching out the launcher for installer, and this is what I got

Spoiler

edit: just noticed it's the wrong installer version, I'll try again with the right one

Edited May 24, 2020 by r0d3nt

[r0d3nt]

Sorry for the double post, but it worked! It opened like how it was supposed to after double clicking. Will I have to do this for every version of forge I want to install?