>If we say that error#5 often comes from bad (?????) printer drivers then using different printers and having that error means there is something else?

Your statement makes no sense; in what way is an error 5 related to a driver. If the error is a VFP trapped error, there's no relationship to a device driver of any sort, and various operating system level errors would at best be loosely associated with drivers and driver references. What exactly are you talking about?

A VFP error 5 is Record out of range, usually the result of either a corrupted index file, or attempting to use an index file belonging to another table. I've not seen this in conjunction with printer drivers.

If you're referring to an operating system reported interrupt 5, in the Intel world that's a bounds error, normally an out-of-range array subscript or invalid indirected memory reference. It's relatively unusual to see these in an application layer; they're usually trapped by the kernal and result in a GPF report of some sort.

A Windows C0000005 error is usually an invalid memory reference; this can have a multitude of causes; problems in garbage collection, invalid pointers, release of a memory block assigned from a heap followed by a subsequent reference to that allocation are but a few of the memory related errors associated with the error code. Only a tiny portion of these are related to drivers of any sort.

Can you clarify which, if any, of these error conditions you're talking about, and how you came to the conclusion that the error was associated with a printer driver?