Upgraded to LR Classic 10.0.0 and now "Edit In" editors are all grayed out.

[slobizman]

I upgraded my Lightroom Classic CC today, to 10.0, and all my "Edit In" editors are grayed out.  How do I get them back? 

I am on a Mac running Big Sur 11.0.1.

I should have known. As soon as I saw it was going to create a new catalog for me I kind of froze, but went ahead anyway.

[dj_paige]

Do you have a subscription to the Adobe Photography Plan, and are you paid up?

[slobizman]

Yes of course.

[GoldingD]

Many members absolutely refuse to open attachments

Also, occasonally, the attachment option in this community site fails (currently working)

Please use the insert photo option instead

[GoldingD]

Is the image you are selecting to edit a smart preview?

If so, is the actual original image it is a preview of, available?

If a smart preview, and original off line (external hard drive disconnected for example) Then this would occur.

[slobizman]

Aha! I can't believe I was so dumb not to notice that I have my external drive, where my photos are, was turned off!  

Sorry to bother you.  Thanks so much for the answer!