This is what it says exactly (I lied, it happens at 96%):
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Patching File TexturePacks\swpc_tex_gui.erf
Patching File TexturePacks\swpc_tex_tpa.erf
Invalid Patch File
The patch file may be corrupted. You may need to obtain a new copy of the patch file.
Get the manual patch.
http://support.lucasarts.com/patches/Kotor2.htm
The patch has been aborted
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