I found out that the component from BG1 UB for BGT "Area Corrections and Restorations" interferes with D0Tweak's component "NPC/Summons set off traps", resulting in the following, installation-breaking error upon installation of D0Tweaks:
"ERROR locating resource for 'COPY'
Resource [DRAKET1.bcs] not found in KEY file:
[./chitin.key]
Stopping installation because of error.
ERROR: [ARD012.ARE] -> [override/ARD012.ARE] Patching Failed (COPY) (Failure("resource [DRAKET1.bcs] not found for 'COPY'"))
Stopping installation because of error."
If SimDing0 passes by and reads this, he might also take a look perhaps?
Thanks a lot!

UPDATE: The culprit is likely to be Idobek's Firedrake script Restorations.
UPDATE: Solved. It's enough to comment out in .TP2 the above mentioned subcomponent that is part of the Area Corrections and Restorations of BG1 UB.
Edited by Salk, 10 July 2007 - 10:13 PM.