Ok I just went through the code for the buffwindows and I think I found the error... Unzip the buff window from my fix to the directory and see if that helps... There's a definition in Cairenn's that is already included in EQUI_Aeluin.xml...
That's weird though cause it shoulda generated an error in the UIErrors.txt
Edit.. In other words use my EQUI_BuffWindow.xml and Cairenn's EQUI_ShortDurationBuffWindow.xml
Edit2: Aeluin's EQUI_BuffWindow.xml
Can you tell I'm tired.. If I didn't get some stupid crashing problem with EQ I wouldn't be reformatting