Themes a glitch in naming

Just a warning on themes. If you get an error when applying your theme that looks like this

A theme with the name MyTheme 1011? and version already exists on the server.

Then you have either forgotten to edit the INF file in your theme or your theme name has pattern matched another theme in your theme directory. In my case I copied verdant and named it verdantx this gave me the error i mentioned above because it clashed with the original theme...maybe I should use GUIDS for the theme names to fix this.