As reported in his thread (http://www.gamesas.com/index.php?/topic/1115454-weird-problem-with-csoblivion/) I had a weird problem with OB and so decided to unistall it. However, since all .bsa files (and I suspect other files too, which I can't recognise) had been mysteriously deleted, every time I tried to unistall OB I get a warning saying "Error Loading C:\PROGRA~1\COMMON~1\INSTAL~1\PROFES~1\RunTime\11\00\Intel32\Ctor.dll The specified module could not be found"

So I figured the only way to remove OB was to delete the C:/Program Files/Bethesda/Oblivion folder and remove the save games from Documents/My Games. Now I have the weird problem that if I insert the OB disk, I get the "play" and "uninstall" options, but if I click the former I'm told to re-install OB, and if I click the latter it says it can't find the uninstall program and that I should use the setup.exe file from OB's installation disk to unistall it. At the moment, I have the Italian GOTY edition, but I would like to switch to the Steam Deluxe Edition, is it safe to do so, or will it screw everything up even more?

I suggest that you make sure Oblivion is completely uninstalled before attempting to install the Steam Deluxe Edition. As stated simply double-click the Setup.exe on the Oblivion disc. To do this, simply double-click on the My Computer icon and find the optical drive in which the Oblivion disc is located. Right-click on the icon, and select either Open or Explore. Navigate the disc's directory for the setup.exe file and double-click it.

Since you have already manually deleted the files, chances are you need to remove its entries fron the registry.

there is a guide in the pinned faq http://www.gamesas.com/index.php?/topic/561101-unofficial-technical-faq/page__p__8103714&#entry8103714

Thank you so much guys, you've been awesome! I did the setup.exe thing (I knew it was something to do with "exploring" the CD!) and it uninstalled perfectly. I then did the register thing too, although only Shivering Isles showed up. In any case I've checked everything and there are no more traces of OB on my PC I'll install the Steam version then. Thanks again, I don't know how to pay you back. :cookie: