I have seen so much criticism of the tray system, introduced in SU 2015, that I must come to the defense of the trays. If you use two monitors as many of us do it's a great way of organizing windows for quick access. Even with one monitor the trays can be hidden with the auto-hide feature.

Also the biggest advantage of SU is it's basic simplicity -no new tools please. That's what plugins are for! And finally please don't change nomenclature - I still call it the VCB whatever SU has changed the name to.

I will start out with a request for an automated migration tool so that I don't have to waste hours manually migrating form one version to the next.

Thanks Tig! I had to do a clean instal of 2017 and then download 3.0.4 but it's working now.

I have a problem with Extension Store in 2017 in that the Extension store only opens a a minimized bar. Clicking on maximise only changes the position of the title bar and trying to drag to a larger window does nothing. I have been forced to use the native SU Extension warehouse which is both slow and limited. Anyone else having this problem?

I've been using my CadMouse for about two weeks now and love it. It is about 1/3 larger than a simple scroll mouse in all dimensions so it might not be suitable for folks with small hands, and I can't imagine lefties being able to use it. It definitely requires the mouse pad. The surprise for me was how useful it is for non CAD applications.
I note that Rich O'Brian has tweeted about it.

I operate with SU on my primary monitor and keep the windows I use most on my secondary monitor. Ever since SU 7 the arrangement has stayed that way; however the last two weeks both the SU drawing window and the menu windows appear on my primary monitor - I can of course move them to my second monitor, but when the session ends and I reopen SU it goes back to the primary monitor. How do I lock them? I've tried the above solutions but no joy.

Still not a complete solution, I have to right click and open with SU 2015 to keep Explorer from crashing. And now I can't move groups or components in the outliner. My latest drawing the foundation remains in the "roof", in a couple of days I will try another repair copy of SU2015 - my 4th copy!

Thanks Jo-ke,

please post when you get an answer!

Later: I downloaded a new copy of 2015 and the problem seems to be solved (also a related? problem that drawings would be opened in2014 with a pop up that requested me to download 2015) I am spending more time on 2015 issues than I am drawing in 2015 - frustrating!

Scalp is causing my copy of SU2015 to crash on opening. I just tried installing a fresh copy from the plugin store and got the same results

Thanks to both of you I found the culprit. I will post it where you suggest Kristoff.