Was working until a little while ago. Now starts, and uses 94% 1 cpu but no program windows.
Run gdb ardour-3.0 and output is:
This GDB was configured as "x86_64-linux-gnu".
Reading symbols from /usr/local/Ardour-3.0beta3_11482-dbg/bin/ardour-3.0...done.
Starting program: /usr/local/Ardour-3.0beta3_11482-dbg/bin/ardour-3.0
/usr/local/Ardour-3.0beta3_11482-dbg/bin/ardour-3.0: error while loading shared libraries: libardourcp.so.4: cannot open shared object file: No such file or directory
[Inferior 1 (process 24076) exited with code 0177]
File is in /usr/local/Ardour-3.0beta3_11482-dbg/lib/ directory.
Going to uninstall/re-install tomorrow to see if it clears up unless more info is needed.