Symptoms first occured after upgrading from 8.10 to 9.04 and included:

• Start VMWare Workstation from menu: Nothing appears to happen. No errors. 
  
• Start VMWare Workstation from command line and get the following error
  

[email protected]:~$ sudo /usr/bin/vmware
Logging to /tmp/vmware-root/setup-25257.log
modinfo: could not find module vmmon       
modinfo: could not find module vmnet       
modinfo: could not find module vmblock     
modinfo: could not find module vmci        
modinfo: could not find module vsock       
modinfo: could not find module vmmon       
modinfo: could not find module vmnet       
modinfo: could not find module vmblock     
modinfo: could not find module vmci        
modinfo: could not find module vsock       
/usr/bin/vmware: line 31: 25257 Segmentation fault      "$BINDIR"/vmware-modconfig --appname="VMware Workstation" --icon="vmware-workstation"    

Resolution:

[email protected]:~$sudo mv /usr/lib/vmware/modules/binary /usr/lib/vmware/modules/binary.old
[email protected]:~$sudo vmware

Solution from : http://ubuntuforums.org/archive/index.php/t-1212220.html