Rubyinstaller devel - Aug 2009 - .bat files in vista

Anybody else out there have problems running .bat files under vista?
i.e.

irb(main):001:0> system("ack.bat abc")
=> false
irb(main):002:0> `ack.bat abc`
Errno::EACCES: Permission denied - ack.bat abc
        from (irb):2:in ``''
        from (irb):2
irb(main):003:0>


works XP, fails vista (same .bat file works fine from the command line)?
Thanks.
-r

> Anybody else out there have problems running .bat files under vista?
> i.e.
> 
> irb(main):001:0> system("ack.bat abc")
> => false
> irb(main):002:0> `ack.bat abc`
> Errno::EACCES: Permission denied - ack.bat abc
>         from (irb):2:in ``''
>         from (irb):2
> irb(main):003:0>
> 
> 
> works XP, fails vista (same .bat file works fine from the command line)?
> Thanks.
> -r
D:\Jon\My Documents\RubyDev>type ack.bat
@echo off
echo %0 %*

both of your examples work on 2Ksp4 for 1.8.6p383 and 1.9.1p243 and 1.9.1p243 on
vista home premium sp2, although the vista account was an admin account.

jon