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Cannot install Forge 1.20.1 - Installer doesnt even starts


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Hi,

i just tried to install Forge 1.20.1 on my PC (Windows), but the installer does not even start. There is a log file which says the following:

 

JVM info: Eclipse Adoptium - 21.0.2 - 21.0.2+13-LTS
java.net.preferIPv4Stack=true
Current Time: 03/02/2024 20:25:11
Exception in thread "main" 
java.lang.IllegalArgumentException: URI has an authority component
    at java.base/java.io.File.<init>(File.java:425)
    at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:78)

I have already multiple other versions installed, which work all fine.

1.12.2 , 1.16.4 , 1.18.2 , 1.19.4 , 1.20.4 

they all work and were installed fine. How come this one wouldnt work ?

Any info is appreciated.
Thanks.

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Hi @TileEntity

 

How come other versions, older and even newer work with that version I have ? Not that I install Java 17 now, and then this doesnt work with other Game versions.
Do I need to uninstall the 21er now, and then install 17er, or does it just overinstall it ? With Oracle Java (which for some reason atm doesnt work on my PC) installing a different version, it usually asked me if I want to get rid of the old one before.
Thanks ;)

 

JVM info: Eclipse Adoptium - 17.0.10 - 17.0.10+7
java.net.preferIPv4Stack=true
Current Time: 03/02/2024 21:22:11
Exception in thread "main" 
java.lang.IllegalArgumentException: URI has an authority component
    at java.base/java.io.File.<init>(File.java:425)
    at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:78)

Hmm ....

Edited by Wolfseye
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