Hi,
That sounds like your preferences.ini file is not owned by the user, but by root.
This can happen if you started vmware player with sudo.
I don't have a linux box with VMware Player handy, but IIRC then the preferences.ini file is located in:
/home/user/.vmware/
Check who owns this file and/or if your normal user can make changes to it.
Alternatively... start vmware player as root (not recommended, but it probably works too)
--
Wil