FileExists() returns false in error when x86-compiled script runs on x64 Win 7

[scriptingsteve]

I have a 32-bit-compiled autoit script that is returning false in error when run on 64-bit Windows 7 for this code:

{{
$Dir=@WindowsDir & "\System32\Drivers\mrxsmb10.sys"
If FileExists($Dir) Then

Msgbox(64,"File found","File '" & $Dir & "' Version " & FileGetVersion($Dir))

Else

Msgbox(16,"Error","File '" & $Dir & "' not found.")

EndIf
}}

The file is physically in the above location (C:\Windows\System32\Drivers\Mrxsmb10.sys). When the script is compiled x86 (AutoIt 3360), it returns false (incorrect). If the same script is recompiled as x64(AutoIt 3360), it returns true (correct).

Is this a bug or a 32 / 64-bit limitation?

[Valik]

What the fuck do I have to do to get you people to read the big giant box with guidelines. Straight from the guidelines and for the second time today:

If you are asking a question you do not have a bug to report, use the forum to ask questions.