* warning: opendir(themes/garland/presets) [function.opendir]: failed to open dir: No such file or directory in /home/dtheme/public_html/sites/all/themes/joker/bootstrap.inc on line 26.
* warning: readdir(): supplied argument is not a valid Directory resource in /home/dtheme/public_html/sites/all/themes/joker/bootstrap.inc on line 27.

The error occurred when I first went into configure for the theme. I saved the configuration without making any changes and the error message went away.