Someone on TIGSource alerted me to some bugs, so I put out a quick fix build.
DOWNLOAD:
https://dl.dropboxusercontent.com/u/3725770/roguessouls_0.961.rarCHANGELOG
-Made phantoms slightly less likely to spawn
-Fixed mouse movement
-Healing flasks should now correctly restore 50% of health
-Monster infighting should now work correctly
-Fixed an issue where selecting "cancel" in the graphics pack dialog would lead to a crash next startup
Have fun!