When using a BIT file created by ISE 9.1i with iMPACT 8.2i , FATAL ERROR occurs: "FATAL_ERROR:Bitstream:basbsbitmap.c:26:1.5 - bitmap:bad row/col (7871, 1590). Process will terminate. To resolve this error, please consult the Answers Database and other online..."
Use the latest version of iMPACT available to work around the problem.
The problem arises because the bitstreams generated are not backwards compatible to older versions of iMPACT. The iMPACT versions will have to be the same or later than the release of the software used for bit file generation.