So, the issues with psh boiled down to a few things, which with some expert help here we were able to solve... 1) nmake is not available on Windows 7. We need to use dmake, so, the standard build process fails with psh. 2) On line 267 of Psh.pm, there is a line that states: @Psh::last_result= @result= @$result; This line does not work in the latest builds of Strawberry or Activestate. Setting the line as follows works: @Psh::last_result= @result; Now that we have a build of psh that works, we are pretty happy...