When a chain containing both an 18V00 PROM and FPGA(s) is programmed and verified using the iMPACT JTAG "Concurrent Programming" method, the software reports:
"ERROR:iMPACT:1353 - ACD entry ERASE_PROGRESS_COUNT not found for device family xxx.
EXCEPTION:iMPACT:ConstraintsManager.c:370:1.26 - Data not found.
ERROR:iMPACT:636 - performOperation() failed!"
If you individually program and verify the devices (sequentially) on the same chain, the process works correctly. To set iMPACT for sequential mode, go to Edit -> Preferences and un-check the "Concurrent Mode" box.
This problem is fixed in the latest 5.1i Service Pack, available at:
The first service pack containing the fix is 5.1i Service Pack 2.