Runtime error R6034 in embedded Python application

Question

I am working on an application which uses Boost.Python to embed the Python interpreter. This is used to run user-generated \"scripts\" which interact with the main program.<

Answer 1

I also had the same problem with embedding Python27.dll from a C-program using the Universal-CRT.

A \msvcr90.dll was the offender. And is off-course in my PATH. AFAICS the only users of msvcr90.dll are the PyWin32 modules \lib\site-packages\win32\win32*.pyd.

The fix was just move \msvcr90.dll to that directory.

PS. PyWin32 still has this as an issue 7 years later!