Gimp and the Libgimpui DLL

Note to self, since I know this is going to come up again and I won't remember the solution: after installing Gimp, while starting the program, if lots of "missing entry points in the libgimpui dll" errors start popping up, then uninstall, erase the old folders in Program Files, make sure the dll is gone from windows/system32, then reinstall Gimp but using a different folder name than the default given.