A problem has been identified where MAP might crash during the "Mapping design into LUTs..." phase if KEEP_HIERARCHY constraints are in use.
To work around this issue, run MAP with the "-ignore_keep_hierarchy" feature.
Mapping design into LUTs...
This problem has been fixed in the latest 7.1i Service Pack available at:
The first service pack containing the fix is 7.1i Service Pack 2.