Just a quick update. We've tried everyone's suggestions to no avail. Well, except the last two because we were at the Microsoft store where they used their software to remove LR and clear the registry but could not attempt to re-install LR because he did not take the disc. Once home, he re-installed LR but got the same error message - that it could not open because it was already open. He called Microsoft and has been on the phone with a woman in India and now a man for hours where they're trying a myriad of things, including installing the most recent version of Windows 10 (which we were pretty sure already WAS the most current). Anyway, he's still on the phone. I will post again if (hopefully WHEN) this issue is resolved. Thanks for everyone's help. The guy at the Microsoft store found the same things several of you directed us to - CClean and the Lock file but never did find anything. To say this is frustrating is an understatement.

Yes, he does have that I think he ran it. Thanks.

Ooooohhhh. Thanks for the link.

[quote=Woodsman]

He tried that and did not find this file. Thanks!

Thanks, Linary. We'll try this before going to the Microsoft store. He's changed focus (after way too much frustration on Easter Sunday!) and is finishing up our taxes.

Thanks, Ralph. Windows 10 does not seem to have CCleaner (which I corroborated with a google search) but I did google Registry cleaner which seems to require a separate piece of software. The description of Registry issues does fit what he's been experiencing - frequent freeze ups and black screens that eventually recover. We think it's time to take it back to the Microsoft store at the mall. They replaced his hard drive some months back and he has a one year warranty for any computer in our house that needs service. Thanks again for your suggestions.

Thanks, Mborn and Mark but he found nothing to end in task manager as I wrote to Spider.

Thanks very much, Spider. Great ideas! Unfortunately, we found nothing running under either of those taps related to Adobe or Lightroom.

My partner had an issue with Lightroom and shut it down. When he tried to re-open it told him there was already a copy open. There wasn't. He un-installed LR but when trying to re-install was once again told it was already there. Any ideas about what might be going on. He's running a high end Dell All-in-One.

Thanks!
Donna

Nice capture! They're beautiful. Love ducks. Never saw that species.

Beautiful shots. You're so lucky to be able to view them in such great light. Thanks for sharing.

Wow! Love this interpretation!!

The second one is my favorite. I love the way it leads my eye thru the rocky cliffs. I'd recommend the dehaze feature of Lightroom. Must of have been so exciting to be there in person!

Me too!! I always come here and search for comments about particular things I'm thinking of buying and after purchasing my refurbished D750 I was wondering about what first FX lens I should get and the response here for the 28-300 was overwhelmingly positive. Very interesting. I, for one, am glad I made the plunge. I got mine used on Adorama or B&H. Can't remember which at the moment.

I love mine! Have used for everything from events to birding. Have 70-200 with TC 2.0 now so won't be using it much for birding anymore but absolutely for a walk around camera. Only thing I don't like about it is that I can't work the telephoto mechanism if the hood is still on in the backwards storing position. In other words, I have to take the time to take that off if I'm just grabbing for a hawk on side of road, for example. It does have vignetting at the short end IF the hood is on. So I guess there are two things I don't like. Images are great though.