Uninstall version 6.10 and install 6.15 problem.

Hi,

I would like to upgrade the 'fb like button' module from 6.10 to 6.15.
First I disabled the module in my module-list, second I used the 'uninstall' button.
To be sure, I also deleted the complete 'fblikebutton' folder from my FTP-server.

Pretty sure everything from the 6.10 version is gone now, I installed the 6.15 version via FTP-server
in the /modules directory.

However, when I then look at my modules list, the version 6.10 still remains... and
there is not a trace of the 6.15 version ?

How do I uninstall 6.10 completely and install 6.15 (or upgrade from 6.10 tot 6.15) ???

Thanks for helping !

Bart