I grabbed the latest and final 1.5.2 and compiled it on Solaris 2.6 using the SunPro C compiler. It passes every test except 'popen2'. It gives me an Assertion Error. Here is part of the test run. Has anyone solved this? Thank you, Lance test_pkg test_popen2 test test_popen2 crashed -- exceptions.AssertionError : test_pow test_pwd