This is very, very odd - in my options screen, the patch number was 26498. I installed from a DVD edition initially, but ended up having to reinstall from an old CD version. At least everything is working now. Thanks for your help!
I am having the same problem ToBEx Core can't be installed. I am using a new, clean, working installation of BG2+ToB, patch 2.5.26498 (Polish language).
Here is my error message:
Installing [TobEx - Core] [Beta 0022]
loading 1 tra file
Installing TobEx...
Creating 1 directory
Copying 1 file ...
Copying 1 file ...
Copying 1 file ...
Copying 1 file ...
Copying 1 file ...
Copying 1 file ...
Copying and patching 1 file ...
FAILURE:
TobEx EXE patch: Target bytes don't match, aborting...
Stopping installation because of error.
ERROR: [bgmain.exe] -> [bgmain.exe] Patching Failed (COPY) (Failure("TobEx EXE p
atch: Target bytes don't match, aborting..."))
Stopping installation because of error.
Stopping installation because of error.
Stopping installation because of error.
ERROR Installing [TobEx - Core], rolling back to previous state
Will uninstall 6 files for [TOBEX/TOBEX.TP2] component 100.
Uninstalled 6 files for [TOBEX/TOBEX.TP2] component 100.
ERROR: Failure("TobEx EXE patch: Target bytes don't match, aborting...")
PLEASE email the file SETUP-TOBEX.DEBUG to Ascension64
Here's the SETUP-TOBEX.DEBUG3.72K390 downloads file, as by installer instruction. Thanks in advance if you decide to have a look at it.