When I attempt to build a project (that built OK in ObjectAda) with GPS 2.1 I see a series of errors in file a-except.a: 1417:17 invalid operator types for operator "<" ...(etc) I reinstalled GNAT 3.15p to see if this would help, but no joy. Am I missing switches that will make this go away? Thanks, Brian bgbell (at) acm.org