If you add this code to grimsoul's, between @echo off and start /d "C:\Program Files\Electronic Arts\The Sims 3 Generations\Game\Bin", Sims3Launcher.exe it will delete your everything in DCBackup, except CCmerged. Make sure you change "Jeff", or "Dell Computer" to whatever it is on your computer, and make absolutly sure it is correct for both of the lines that with start attrib, as if one is wrong ccmerged will either be read-only, deleted!
attrib +r "C:\Users\Dell Computer\Documents\Electronic Arts\The Sims 3\DCBackup\ccmerged.package"
del /q "C:\Users\Dell Computer\Documents\Electronic Arts\The Sims 3\DCBackup"
attrib -r "C:\Users\Dell Computer\Documents\Electronic Arts\The Sims 3\DCBackup\ccmerged.package"
So once you are done it should look like this
@echo off
del "C:\Users\Jeff\Documents\Electronic Arts\The Sims 3\CASPartCache.package"
del "C:\Users\Jeff\Documents\Electronic Arts\The Sims 3\scriptCache.package"
del "C:\Users\Jeff\Documents\Electronic Arts\The Sims 3\compositorCache.package"
del "C:\Users\Jeff\Documents\Electronic Arts\The Sims 3\simCompositorCache.package"
del /q "C:\Users\Jeff\Documents\Electronic Arts\The Sims 3\WorldCaches\*.*"
attrib +r "C:\Users\Dell Computer\Documents\Electronic Arts\The Sims 3\DCBackup\ccmerged.package"
del /q "C:\Users\Dell Computer\Documents\Electronic Arts\The Sims 3\DCBackup"
attrib -r "C:\Users\Dell Computer\Documents\Electronic Arts\The Sims 3\DCBackup\ccmerged.package"
start /d "C:\Program Files\Electronic Arts\The Sims 3 Generations\Game\Bin" Sims3Launcher.exe
exit