Spell checker fails on IE9: "The window was not opened from another window."

[mwb]

We're using CKEditor with Internet Explorer 9 and aspell.

If you open up the spell checker window you'll see an error message: "This page cannot be displayed. The window was not opened from another window."

Using a different browser (IE8, Chrome, Firefox) this issue does not pop up.

This was also mentioned on the forums, already a year ago, alongside with a possible patch (which I did not yet got around to try) but I thought it would be good to register it here as well).

[mwb]

Forum discussion:

​http://cksource.com/forums/viewtopic.php?f=11&t=22861

[Jakub Ś]

Sorry but CKSource only supports Spellchecker.net. Rest of spellcheckers is just user's choice and thus his/hers task to integrate it correctly.

Closing the ticket.