Hello -
I found the Baldurdash Fixpack and the GameTextUpdate for BG1 won't install after I had installed EasyTutu. Something changed in the registry perhaps??. I had to extract the files and and throw them in my BG1 override manually. Just incase you want to know 
Interesting -- I appreciate you telling me. I would chalk it up to a flaw in the Baldurdash delivery mechanism, as EasyTutu does not modify any BG1 or BG2 registry keys, and does not modify anything in the BG1 and BG2 installation directories. To verify this, you can examine the files in your BG1 directory, which won't have changed, or view the registry key EasyTutu uses to find BG1, which is likewise unchanged and still present at: (HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DirectPlay\Applications\Baldur's Gate).
I can say that EasyTutu installs Tutu using InstallShield, and I see that BG1 does as well (there is an uninst.isu file in my BG1 directory). If Baldurdash is doing something like looking for the program last installed by InstallShield, that is a flawed methodology. But whatever it is doing, it can't be too sophisticated, since it essentially just a self-extracting EXE.