Hmm... A number of sets of binary information has been changed, almost as if you opened the file with Notepad or something...
This could get too technical, but do you have a hex editor? If so, make a backup of the descr_items.db, then replace all occurences of
B8 E6 18 with 88 D7 17
F0 73 with E8 84
C8 C6 with 28 D7
88 8A with C8 9A
C0 8A with 00 9B
98 BA with A8 CA
If it makes no difference to make these replacements, make a new 1.5 RTW installation and copy the patch_1.pak file from there to the installation containing EB.
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If you have no clue what I'm talking about above, please try to install 1.5 RTW again somewhere and copy the descr_items.db and patch_1.pak files from that installation into the one you have now.
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