Joel Pearson wrote in post #1069477:
> Joel Pearson wrote in post #1069476:
>> Bartosz Dziewoski wrote in post #1069474:
>>> It works for me on Win XP. What is the return value of #system call?
>>>
>>> Have you tried using backticks or Kernel#spawn instead?
>>>
>>> -- Matma Rex
>>
>> Thanks for your response.
>> Spawn and backticks both work with CUI but not GUI. I'll try out another
>> PC and see if it's my interpreter that's acting up. I'll reply with the
>> results.
>>
>> Joe
>
> It works in Windows XP but fails on both Win7-64 machines I have acess
> to. Looks like WinPE platform issue?

I have tried the attrib command on Windows 7 independantly of Ruby and it works from both the command console and the Run command. I can only assume that the command isn't being properly passed by Rubyw.exe on post-XP Windows systems.