Internet connection is always on and reliable.

After I wake up the mac, let it fully load, then pick Autocad in the dock (which has the dot below it to show it's already open)...nothing happens, no welcome screen or create tab.  

I have waited up to 10 minutes to see if it will finally wake up, nothing.

If I force quit autocad at this point it WILL NOT open up again.

It's at this point I have to restart the computer.  

If I don't force quit Autocad before restarting I do get a notice telling me to quit Autocad before shutting down.

Very strange.  Autocad works flawlessly otherwise.