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I'm executing WinRK.exe in a loop using the following code:

for x in Files:
Command_String = 'C:\Program Files\WinRK\WinRK.exe -create ' +
os.path.join(InputDirectory, os.path.splitext(x)[0]) + ' -set
compression_method ppmz -setg include_paths none -add ' +
os.path.join(InputDirectory, x) + ' -apply -quit'
PROC = subprocess.Popen(Command_String)
PROC.wait()

Occasionally, WinRK crashes, and this program hangs at PROC.wait().
What can I do about this?

Earl Eiland