Spritze,
Please try this:
- locate the ootp9.exe in the OOTP program directory (should be in c:\program files\ootp dev\ootp baseball 9\)
- rename the ootp9.exe to ootp9.exe.old
- in the same folder there should be a file ootp9.exe.manifest: rename it to ootp9.exe.manifest.old
- there should also be a folder Microsoft.VC90.CRT, rename it to Microsoft.VC90.CRT.old
- download and open this file:
http://ootpsupport.com/ootp9212/ootp9_pre_XP.zip
If it doesn't exist, download it from here:
http://ootpdevfiles.com/ootp/ootp9_pre_XP.zip
- the downloaded file contains a file ootp9.exe - copy it into the OOTP program directory
Start OOTP.