I haven’t had any more bug reports from players using 1.08c Beta for a while so I’m going to put this out there with all the fixes and call it released.
Download the .zip file and then overwrite 3 files and the GameData folder in the Program Files\Cryptic Comet\Solium Infernum folder. Make sure you overwrite the GameData folder and its files. You might need to delete the folder and then unzip the new one there to ensure that they are replaced.
IMPORTANT: It seems that windows 7 often creates another install location in AppData. If you are copying over the 3 files and the GameData folder to the Program Files location but the version on the game is still not going to 1.08c then you will need to update the files and folder in the AppData location. The easiest way to find this is to do a search for MainIFace.cxt and note the AppData location if it is returned.