>i get a message which say invalid expression and then i get a C500000 error and my visual foxpro exits.
>now the strange thing is that i run a form which has a list box with a fairly valid sql command.
>when i run it from a submenu it gives this error but if i run it from the command part of the menu it does not give me any error.
>also the same from the command box. no error.
>i do not understand how positioning in a menu can induce an error


The C5 error is basically a GPF and can be caused by a number of things. There were changes made in SP3 and SP4 to make it harder to get this error. So, the first place to start is to make sure you have installed SP4.