I re-installed Lightroom CC and removed old preferences but the error is still there.
I can run LR just fine, but when I choose "Import photo and video", the Import button is greyed out and the cancel button does not work. Sometimes I can close the dialog using ESC, but most of the time - I have to quit LR completely and start over.
I have a card reader connected, but no cards inserted. No USB sticks inserted either.
What is wrong?
Please state the exact version number of your Lightroom CC 2015. Go to Help->System Info and report the version number of Lightroom shown there
Lightroom version: CC 2015.7 [ 1090788 ]
Installed via CC App 2 hours ago
I have now optimized catalog and rebooted the machine twice, and now - for the moment, the import dialog works as intended :-)
Nice, but strange!