When I upgraded to Ubuntu 15.10, my VMWare Workstation 12.0 installation stopped working. After a quick search, I found the answer. According to this thread on VMWare’s forum, the answer involves telling Workstation where to find a particular file.
Open up a terminal, then copy and paste the following line:
echo /usr/lib/vmware/lib/libglibmm-2.4.so.1 | sudo tee -a /etc/ld.so.conf.d/LD_LIBRARY_PATH.conf
Then copy and paste this:
After this, the Workstation GUI will start normally. Simple and quick solution!