Viv,
looks like something deep in your VFP was broken. Do you have done something that could mix up dlls of sevicepacks etc.? (Installs, for example)

Run a virus and a hardware check

Agnes
>Hi Agnes,
>
>As mentioned elsewhere I ended up uninstalling/re-installing VFP and the problem disappeared so I can't do any further digging. However the problem was occurring with (AFAIK) all projects where this code was used and all were cured by the re-install which would seem to preclude any corruption in the PJX/PJT files.
>
>Best,
>Viv