Hi: I have a problem with an option group on a form in Access 2007. When I run the form, I can select an option from the option group, but if I try to select a different option instead, the form does not allow this. I either have to run the original option and come back to the form, or close the form and start again. I've never seen an option group behave like this before. I presume it's a setting of some kind that needs to be changed, but I haven't been able to determine what's causing this. Any ideas? Thanks.