Just put back on VS2008 Professional and removed the Express Edition and now I am getting this error after the changeover. The path to Direct X SDK(June 2010) (\Lib\x86) is still there in the project "libpjproject." Looking at that directory, I see the file is there. I also went into Tools-> options -> Projects and Solutions-> VC++ Directories and added the various DirectX directories into there. Executables (\Utilities\bin\x86) Include (\Include) Lib (Lib\x86) What did I miss? Thank you. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20120525/cf0a217c/attachment.html>