Hello  I have just installed CAESES Free on Ubuntu 16.04 LTS (running on a MacBook pro via VMware).   When I run CAESES the GUI loads OK but the following scipt  is displayed by the terminal window. X Error: GLXBadContext 169   Extension:    155 (Uknown extension)   Minor opcode: 6 (Unknown request) Fusion  Resource id:  0x3600176 Followed by several simlar lines. When I attempt to use the GUI 3DView .  There are no images , caves lines etc shown on the screen. I am a newbie  can you offer any a