After installing VMware server + console successfully, the client console might bug you with an error message sounding like

VMware Server Console

The Process exited with an error:

End of error message.

And tailing the log file might output stuff similar to this

foo# tail -f /var/log/vmware/vmware-serverd.log

Nov 05 20:34:38: app| Attempting to launch vmx : /var/lib/vmware/Virtual Machines/Other Linux 2.6.x kernel/Other Linux 2.6.x kernel.vmx
Nov 05 20:34:38: app| Error during launch: 11, The process exited with an error:
Nov 05 20:34:38: app| End of error message
Nov 05 20:34:38: app| VmsdVmStatePendingCmdFailed: cmd status is already set
Nov 05 20:34:41: app| Msg_Post: Error
Nov 05 20:34:41: app| [msg.vmmonPosix.badVersion] Version mismatch with vmmon module: expecting 138.0, got 137.0.
Nov 05 20:34:41: app| [msg.vmmonPosix.badDriver] You have an incorrect version of the `vmmon’ kernel module.
Nov 05 20:34:41: app| Try reinstalling VMware Server.
Nov 05 20:34:41: app| [localized] Version mismatch with vmmon module: expecting 138.0, got 137.0.
Nov 05 20:34:41: app| You have an incorrect version of the `vmmon’ kernel module.
Nov 05 20:34:41: app| Try reinstalling VMware Server.
Nov 05 20:34:41: app| —————————————-
Nov 05 20:34:41: app| Msg_Post: Version mismatch with vmmon module: expecting 138.0, got 137.0.
Nov 05 20:34:41: app| You have an incorrect version of the `vmmon’ kernel module.
Nov 05 20:34:41: app| Try reinstalling VMware Server.
Nov 05 20:34:41: app|
Nov 05 20:34:41: app| Msg_Post: Error
Nov 05 20:34:41: app| [msg.vmmonPosix.initFailed] Failed to initialize monitor device.
Nov 05 20:34:41: app| [localized] Failed to initialize monitor device.
Nov 05 20:34:41: app| —————————————-
Nov 05 20:34:41: app| Msg_Post: Failed to initialize monitor device.

yea..its actually true, just reinstalling the vmware server solves the problem (no need to uninstall it first) and its pretty quick since you can skip the networking configuration (its been saved)