Hello, Arshla, Thanks very much for the article you kindly referred me to. Unfortunately, it only applies to a Nik module that I don't use and doesn't address my problem but it was interesting nevertheless. Since my last post, I have done an absolutely clean re-install of both programs and done a scan by Malwarebytes (just in case). Neither action made any difference. I also installed the ON1 add-on and there was a slight difference in that the dialog box was correctly formed. However, none of the buttons worked so it was no real advance. I also used the Windows System Restore module to return the system to its condition before the problem arose but that didn't work either. In fact, the problem has got worse today because I can no longer get into the Editor at all. When I try, the screen gives the usual indication that the Editor Workspace is being loaded but nothing further happens until the indication disappears and I am left in Organizer once again. I tried yet another re-install (I am beginning to memorise the serial number!) but nothing has changed. This sudden, unexpected failure of the product is beginning to affect my work and I am at a loss to know what else to do so, if you do have any ideas, I shall be so glad to hear from you. Regards, Alan Hodges
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