Same error in Wine 1.3.29 with SketchUp's Ruby (1.86) and latest Ruby. Code: $ wine cmd CMD Version 1.3.29 C:\>Ruby186\bin\ruby.exe -e 'puts %x[dir]' err:ntdll:RtlpWaitForCriticalSection section 0x1116ac "?" wait timed out in thread 002b, blocked by 0000, retrying (60 sec)