Perry,

Check http://support.microsoft.com/?id=818528

>We have a system that is comprised of 3 separate Exes that share the same data. They are compiled in VFP5. We are trying to setup the system on Citrix.
>
>But now, if one user opens 2 of the 3 apps, the last app to open will function correctly, but the first one will get "Error reading file".
>
>We have applied the registry settings from MSKB #299603 and the hotfix from MSKB #249816.
>
>Does anyone have anyother suggestions?
>
>Thanks,
>
>Perry