Direwolf20 1.10 seems to crash every time I try to start it up, it doesn't even show the Forge loading screen or anything like that, I recently had to factory reset my PC so I lost the java version and reinstalled 64 bit.
The launcher has access to 4 GB of ram, then again it looks like the launcher is struggling to draw the window, swapping launchers should fix it.[DOUBLEPOST=1488727379,1488723722][/DOUBLEPOST] Swapping from MyM launcher to the FTBLauncher allowed the initialisation of the pack but Java crashes at RFTools[DOUBLEPOST=1488727656][/DOUBLEPOST] Looking into a hotfix for my drivers if its to do with drawing the windows.
This crash is related to the version of graphics drivers you have. Assuming you have nvidia, driver 378.49 is the issue, update to the latest should solve your issue.