plc4.dll corrupted

Hi All,

Do any of you have an idea why the file F:\PortableApps\FirefoxPortable\App\firefox\plc4.dll would suddenly become corrupted? I.e. it was preventing PFF from starting.

Three things happened on my machine from the time PFF last worked fine
- installing and uninstalling VMWare Workstation
- installing VMWare Server
- Upgrading PTB 1.5.0.8 to 1.5.0.9

I simply overwrote the file that windows thought was corrupt with the same file from firefox on my notebook. Would that be fine or should I rather fine a PFF version of the file?

Thanks
Paul