The current version is 0.915, and you can get it by logging into "download.stardock.com" with your Stardock account details, and downloading the new version.  I'm not sure whether the update patch works from all those versions ago, but if not you can download the full install and install the full game.  It is a good idea to clear out the "C:\Users\*Username*\My Documents\My Games\FallenEnchantress\ScreenShots" for Windows 7 and Vista and "C:\Documents and Settings\*Username*\My Documents\My Games\FallenEnchantress\ScreenShots" and the same directory except "\Saves" on the end.  See this directory structure for my Win7 system when you are updating (you can backup any screenshots you want to keep to another directory).