Dave, I've been running serialization tests of the current "HEAD" (1.35) version on my local machine. Right now All the tests which use the "export" functionality are failing when the tests are built and run in release mode. All tests (except one) pass when tests are built/run in debug mode. In particular the "test_exported" fails when built in release mode and passes with debug mode. I've made couple of seemingly unrelated changes on my local system so it IS possible that I broke something - but I'm wondering if perhaps you neglected to test the changes to "export" in release mode? Knowing this would be helpful to me. In the past I've have a lot of problems with this functionality to work with programs compiled in release mode. Robert Ramey