There's not enough information here to determine the exact cause

HCL Notes/Domino 8.5 Forum (includes Notes Traveler)

Subject:

but it would seem to be happening during the Querysave event of the form (or of a subform).

If you need more help you need to provide more information. Is this your own application? Is it their mail file? Is this user using an identical design as other users? How do you know this is the case? Have you tried this using the LotusScript debugger?

If this is the user's mail file, make sure they're using the authorized design. Do a design replace from the template. Check for design elements that are protected from design refresh/replace (especially the form and subforms, and script libraries).

If it's a shared application, where you know the user has the same design as everyone else because it's the same physical file they're accessing, debug to trace the user's logic.

Try recompile all lotusscript. Use Option Declare in your LotusScript -- always do this. Learn how to code error trapping to display the full error stack in LotusScript.

tips for debugging and asking questions

Feedback response number AGUD8Q6MSW created by ~Julia Prefootherlen on 01/03/2012