Sorry to hear of your trouble -- are you playing the windows or OSX version of the game? Also, if you are on windows can you look in the game install folder, under Tidalis_Data, and post the output_log.txt file that is there? It sounds like something is a corrupted on your copy, but I'm not sure if that's a problem with the installer (it seemed fine earlier), or if it's a problem with something on your system or the way it uninstalled, or what.
Sorry for the trouble, hopefully that output log will help us sort it out quickly, though. Thanks for your support!