From: Jon Forums Date: 2010-04-29T01:56:02+09:00 Subject: [ruby-core:29858] [Bug #3215] Windows: IO.popen returns "handle is invalid" Issue #3215 has been updated by Jon Forums. When using the mingw v3.4.5 built 1.9.1p378 from http://rubyinstaller.org/ the example snippet also works for me (Win7 Ultimate 32-bit) as well as the IO.popen code from the following patch I use with Jekyll http://github.com/jonforums/jekyll/commit/237b8ebe1defdee92afc5dc146a4d89058a16c37 ---------------------------------------- http://redmine.ruby-lang.org/issues/show/3215 ---------------------------------------- http://redmine.ruby-lang.org