DW20 1.6.4 1.0.7 Crashes on when launching

[Tuonelan]

After launching the DW20 pack, I can briefly see the Mojang logo, but then MC and the launcher are crashing:

Crash Report: http://pastebin.com/wrca0x94

Any help is much appreciated.

 

[JamiePhonic]

selete MapWriter.cfg in the configs folder of the direwolf20 pack minecraft folder
i.e. <FTB instal>\Direwolf20_1_6_4\minecraft\config\MapWriter.cfg

 

[Tuonelan]

Thanks, that helped. I jsut had to delete the file out of my saves folder. Do you know what causes this bug?

 

[JamiePhonic]

no idea. it may be caused by an unclean exit (i.e. a crash)