Unable to get Other Window Source working

So I have been unable to get 'Other Window Source' to work. The GUI panel and settings look fine but when I click the 'Add' button to create it the whole ISBoxer GUI disappears/crashes and can't even be opened again, I have to exit and log back in to get the GUI to even open again. Any ideas? Everything else with Video FX is working great.

Maybe some Windows 7 settings?

[lax]

This should be solved as of a recent ISBoxer update. Launching ISBoxer should automatically offer an update to version 40.4 which includes this recent fix (unless you already have the update; you can check your version in Help->About). Export to Inner Space after updating and it should work fine

I´m not able to get it working either.
On the newest version of isboxer, EVE Online and windows 8 64bit RTM.
Everything else seems to work fine, except "other window source".
I chose a name and a source window, then I click add...and nothing happens.