Help!! in Modder Support Posted September 28, 2016 I download Minecraft Forge 1.6.4. I click install and there I "failed = dowload_libraries <mcp_dir, version_json [ 'libraries'] mcp_info [' natives _dir ']> or failed" and other errors. Then I go to the folder mcp decompile the file manually open the eclipse I set workspace folder in the folder eclipse mcp but fashion but can not run it (near the minecraft folder is a red exclamation mark and appears to me "Error: Could not find or load main class net.minecraft.launchwrapper.Launch Java HotSpot Client VM warning: Using incremental CMS is deprecated and will likely be removed in a future release ".) Then I set to run the cleanup again eclipse to eclipse folder but it did not work.