It's a bug in the wmic command. It's been suggested to copy XSL files into the %WINDIR%system32 (or equivalent if 64 bit.) However, the command below works just as well without the need to copy files:
wmic process get ProcessId,Description,CommandLine,ExecutablePath,ParentProcessId /format:"%WINDIR%System32wbemen-uscsv"
Of course, the "en-us" will be different for different locales.
If you want to redirect output to a file add a switch /output:"your filename here" before the process keyword
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