In the '..\Run\static\heroes' folder, there are surfA.bic and surfA.idc, etc. files. Maybe the idc files are lower quality versions of the bic files?
If you manually extract the rar files on disk 2, do you still get errors? There were no changes to these files from 1.29 to 1.33, so I doubt the latest patch made an updates. If you can extract them as per the manual install procedure, you would not need to re-install the game/patch.
