Cannot access 'Since last run' window

[Rich Stanton]

Anyone any suggestions for this? I've been noticing that some of my 
scheduled transactions haven't been appearing correctly, and wonder if 
it's related to the fact that when Gnucash starts, I have a gnucash icon 
on the taskbar, and 2 windows are visible when I hover over it. One is 
the main app window, the other is the 'since last run' window. Usually 
I'd 'OK' the 'since last run' window. However although it has a 
thumbnail on the taskbar, clicking on the 'since last window' doesn't do 
anything, and I can't get to it using alt-escape or alt-tab. I can get 
to the main app window fine.

Using 2.4.13 on win8.1 x64.

Thanks for any suggestions on how I can get to that window!