I'll try to reproduce it. But, all I did was use "Unpack STR2" on a file, to see what would happen (since you said it doesn't fully work yet), and it deleted all the STR2 files in the folder. I thought maybe it does an auto backup of all the files to another folder or something. But I didn't see anything if it does. It some how messed up the launch screen where you choose between DX9 and DX10, too; it was just a white box.