Junk Sender List will not close. Please help.

[roblobster]

When I right click a message then add to Junk Email Sender List a little box
pops up with all the registered junk sender. But nothing happens when I
click OK. The box will not close unless I click Cancel or hit Esc. How do
you use this thing?

Thank you for your inputs

 

[R. Funk]

What does it say inside the little box that pops up?

 

[Roblobster]

It's the "Edit Junk Senders" box which has a list of all the addresses I've
specified as Junk Sender. The right side are:
Ok, Cancel, Add..., Edit..., Delete.
But when I hit Ok, nothing happens.