Hi tut_arie,

1) I have seen this error on rare occasion. For me, it occured in a custom class code when I did not have a form resident (hence, why "THISFORM" had no form to point to).

2) Check out FSIZE in VFP Help: "Returns the size in bytes of a specified field or file....The current setting of SET COMPATIBLE determines if FSIZE( ) returns the size of a field or a file. If SET COMPATIBLE is set to OFF or FOXPLUS (the default), FSIZE( ) returns the size of a field. If SET COMPATIBLE is set to ON or DB4, FSIZE( ) returns the size of a file."

3) With your project open and in focus, go under the "Project" menu, click on "Project Info," click on the Project tab, check on the Project Class and name your project hook class. If you haven't created one, you can do so by clicking on the Classes tab in the Project Manager and selecting "New." You'll see "ProjectHook" in the list for dropdown labeled "Based On:".

HTH,
--Michael