povray not found

[wanglongqi]

Due to the problem described here, python does not search all env paths:

Due to the differences in the underlying implementation, subprocess.Popen will only search the path by default on non-Windows systems. The only reliable cross-platform way to scan the path is by passing shell=True to the subprocess call, but that has its own issues (as detailed in the Popen documentation)

Currently, I can not render scene with default package, which end up with

 OSError: [Errno 2] No such file or directory 

Any option can fix this problem?