>>>What if you move this to Topform.Activate event?
>>
>>Thanks Ed, this worked perfectly. Is the reason it wasn't working in the .Init(), because at that point the TopLevelForm doesn't actually exist yet?
>

You have to take care with code in Activate Event. This events is executed each time the form is activated. I mean you have to be carefully when you call another form from this one. For Example a Messagebox, when you close the messagebox Activate Event is fired again.