Minecraft forge Decomp failing

[SHOOK_Linus]

So I didn't know where else to put this topic and this seemed to fit,I am trying to port a mod to 1.10.2 from 1.7.10, and I got the 1.7.10 Forge Src to decomp correctly, but now when I try to decomp 1.10.2 it crashes. I have -Xmx1200M allocated to it, if I go any higher it says the stack size is too large, and ive tried everyhting to fix that issue. It seems like the cmd or Java is in 32 bit but they're not, they're in 64bit.  I managed to get past decompileMc with 1200Mb., as that was the issue beforehand, it loaded correctly, and now it has crashed again saying that "hunks" are missing. I am also really new to this, so don't get too technical please. If anyone can help me i'd be happy, thanks.

[SHOOK_Linus]

This ended up fixing my problem: 

gradlew cleanCache clean setupDecompWorkspace -d --refresh-dependencies