Keywords: MapHelpers, mhcconstimp.c, 162, area, group, resolveSiteType, LOC
General Description: A design that mapped correctly in 3.1i SP2 fails in 3.1i SP3 with the error:
FATAL_ERROR: MapHelpers: mhcconstimp.c:162:188.8.131.52 - resolveSiteType() has not been called on this LOC. Process will terminate. To resolve this error, please consult the Answers Database and other online resources at http://support.xilinx.com
This problem is due to an interaction between Area Group constraints on comps that are being packed into IOBs and the LOC attributes that are on other IOB comps.