Shouldn't have to. It might write bad data to the Save folder, but if it does, just delete that again and start over. Try it first though without deletion. Just open the LAA app that is in the FotRSU game's root folder after the mod activation, and plug SH4.exe file into it, and set SH4.exe to "True"... I'm pretty sure that's mentioned in the short form and the long form of the pdf files in the Support folder on how to do it... The game with FotRSU definitely needs LAA so that it can address more than the minuscule portion of system RAM the Windows OS normally allows it...
