It might be just
my chitin.key, so could someone of you check out what this gives you:
BACKUP ~blah/backup~
AUTHOR ~blah~
BEGIN ~blah~
COPY_EXISTING ~AR0204.TIS~ ~blah/1~
Cause mine gives this $.:
WeiDU v 21300 Log
C:\Unbiftest\BGII - SoA\setup-Unbif.exe
[./CHITIN.KEY] loaded, 590551 bytes
[./CHITIN.KEY] 182 BIFFs, 41793 resources
[dialog.tlk] loaded, 8694864 bytes
[dialog.tlk] 74125 string entries
[./Autorun.ini] loaded, 1452 bytes
[./baldur.ini] loaded, 3527 bytes
Possible HD/CD Path: [C:\Unbiftest\BGII - SoA\]
Possible HD/CD Path: [C:\Unbiftest\BGII - SoA\CD1\]
Possible HD/CD Path: [C:\Unbiftest\BGII - SoA\CD2\]
Possible HD/CD Path: [C:\Unbiftest\BGII - SoA\CD2\]
Possible HD/CD Path: [C:\Unbiftest\BGII - SoA\CD3\]
Possible HD/CD Path: [C:\Unbiftest\BGII - SoA\CD4\]
Possible HD/CD Path: [C:\Unbiftest\BGII - SoA\CD5\]
[./Keymap.ini] loaded, 5615 bytes
[./Mplaynow.ini] loaded, 230 bytes
[C:\Unbiftest\BGII - SoA\setup-Unbif.exe] Using scripting style "BG2"
[dialog.tlk] claims to be writeable.
[dialog.tlk] claims to be a regular file.
Install Component [Unbiffing of the BGII, v0.01]?
nstall, or [N]ot Install or [Q]uit?
Installing [Unbiffing of the BGII, v0.01]
Copying 1 file ...
BIFF may be in hard-drive CD-path [C:\Unbiftest\BGII - SoA\CD5\/DATA/AREA020A.BIF]
BIFF may be in hard-drive CD-path [C:\Unbiftest\BGII - SoA\CD4\/DATA/AREA020A.BIF]
BIFF may be in hard-drive CD-path [C:\Unbiftest\BGII - SoA\CD3\/DATA/AREA020A.BIF]
[C:\Unbiftest\BGII - SoA\CD3\/DATA/AREA020A.BIF] 21066943 bytes (compressed), 90 files, 4 tilesets
ERROR: BIFF [C:\Unbiftest\BGII - SoA\CD3\/DATA/AREA020A.BIF]: unable to extract tileset 1
ERROR locating resource for 'COPY'
Resource [AR0204.TIS] not found in KEY file:
[./chitin.key]
Stopping installation because of error.
ERROR Installing [Unbiffing of the BGII, v0.01], rolling back to previous state
[Unbif/backup/0/UNSETSTR.0] SET_STRING uninstall info not found
Will uninstall 0 files for [UNBIF/SETUP-UNBIF.TP2] component 0.
Uninstalled 0 files for [UNBIF/SETUP-UNBIF.TP2] component 0.
ERROR: Failure("resource [AR0204.TIS] not found for 'COPY'")
PLEASE email the file SETUP-UNBIF.DEBUG to Jarno Mikkola
Install Component [Unbiffing of the BGII, v0.01]?
nstall, or [N]ot Install or [Q]uit? Saving This Log:
NOT INSTALLED DUE TO ERRORS Unbiffing of the BGII, v0.01
WeiDU Timings
OUTER_INNER_PATCH 0.000
unmarshal compressed BIFF 0.000
READ_* 0.000
load TLK 0.000
Parsing TP2 files 0.000
DEFINE_PATCH_MACRO 0.000
DEFINE_ACTION_MACRO 0.000
parsing .log files 0.000
INCLUDE 0.000
process_patch2 0.000
DEFINE_PATCH_FUNCTION 0.000
eval_pe 0.000
tp2 uninstall 0.008
loading files 0.036
Parsing TPA files 0.045
unmarshal KEY 0.045
unmarshal TLK 0.105
COPY 0.320
stuff not covered elsewhere 10.853
TOTAL 11.412
If the 'blah' is replaced by 'unbif' and other things.

I noticed this when I tried to originally do this:
COPY_EXISTING_REGEXP GLOB ~.*~ ~Unbif/1~
For this.