Default tray is not responding

Hi there, I was working with sketchup and Autocad, I pasted an excel file in Autocad and it got stuck, when I was waiting for the program to respond I went in sketchup , I cliccked on the default tray and I got a message saying something like , Autocad is using the server and that action could not be done…well now I cannot use all the default tray, if I click on it it making a sound, I close everything and restarted the computer twice and nothing.

All files from sketchup are stuck, old or new.

Any ideas? P.s. I’m using Sketchup 2016 Pro

Now it’s working…I had no idea why but after 3 hours decided to start working again

I HAVE THE SAME PROBLEM CAN YOU HELP ME
well now I cannot use all the default tray, if I click on it it making a sound

I wish I could help but mine it start to work after 3 hours without doing anything…hopefully your is working already right now