On Windows 8, with CsoundQt head built with MinGW 4.8.1 Posix threads dw2 exception handling, and with Qt5 built from sources with the same toolchain, realtime audio works the first time the play button is used, but the second time the play button is used, Csound renders but nothing is heard. The messages say that the PortAudio module is unknown, and the dummy module is being used.

Running the piece from CsoundQt in the terminal works fine any number of times.

I am still unable to get CsoundQt to run on my other computer... I am sure that the InterlockedCompareExchange bug is not a factor.

The Dependency Walker tool is not helping much. It does tell me which library is failing, however, USP10.dll. Also IMM32.dll is a problem if I try to run Dependency Walker on my development computer.

Regards,

Mike