Hi,

I'm not sure if this is a problem of MultiMc or Forge but when I start a new instance in MM and start it before installing Forge it works (so no mods just vanilla). But when I instal Forge (tried 4.1.1.251 and 4.1.1.297 as i beleve it is the latest) it gives an error and shuts down. The log file should  be in the attachments.

Thanks for looking at this post.

2012-10-01 15:27:38 [FINEST] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/guava-12.0.1.jar

2012-10-01 15:27:38 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/guava-12.0.1.jar

2012-10-01 15:27:43 [sEVERE] [ForgeModLoader] There was a problem downloading the file guava-12.0.1.jar automatically. Perhaps you have an environment without internet access. You will need to download the file manually or restart and let it try again

 

Something is preventing you from downloading this required file.  You can download it manually and put it in into your .minecraft/libs folder.

 

 

Yes thank you! now it works my firewall was the problem. It now works as a charm