Fixed a bug with Popen that caused it to sometimes fail unit tests, depending on what other unit tests it was run with.
Fixed a bug with Popen that caused it to sometimes fail unit tests, depending on what other unit tests it was run with.

paasmaker/paasmaker,kaze/paasmaker,paasmaker/paasmaker,kaze/paasmaker,kaze/paasmaker,paasmaker/paasmaker,kaze/paasmaker,paasmaker/paasmaker,paasmaker/paasmaker,kaze/paasmaker