<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hello. We are building a product that uses Python 2.5 and LXML (2.1.4 at present) on Windows in a highly multi-threaded environment. We have been trying to resolve an issue that causes Python to throw a Windows unhandled exception in Windows for a few months now. We have been unsuccessful and we are running out of time. The issue appears to involve lxml freeing the same pointer twice. We have already compiled a debug build of lxml and this is what DevStudio reports when we run with this build. We have been trying to get some more valuable information to provide to the mailing list but keep on hitting brick walls. We need help. Can anyone provide some suggestions?<br><br>Thank you,<br><br>Robert Liebeskind<br>Perfect World Corp.<br><a href="mailto:robl@perfectworld.net">robl@perfectworld.net</a><br><br><br></body></html>