Less error if comments are enabled

Hi

I use Less and Omega, and have no problems.

Except if I enable comments. The I get the following error:

LESS error: File `http://example.com/narrow%3A%3Asites/all/themes/my_theme/css/my-theme-alpha-default.css.less` not found.,
LESS error: File `http://example.com/narrow%3A%3Asites/all/themes/my_theme/css/my-theme-alpha-default-narrow.css.less` not found.,
LESS error: File `http://example.com/normal%3A%3Asites/all/themes/my_theme/css/my-theme-alpha-default.css.less` not found.,
LESS error: File `http://example.com/ie%3A%3Anormal%3A%3Asites/all/themes/my_theme/css/my-theme-alpha-default.css.less` not found.,
LESS error: File `http://example.com/normal%3A%3Asites/all/themes/my_theme/css/my-theme-alpha-default-normal.css.less` not found.,
LESS error: File `http://example.com/ie%3A%3Anormal%3A%3Asites/all/themes/my_theme/css/my-theme-alpha-default-normal.css.less` not found.,

I don't know why it put stuff like "narrow%3A%3A" into the path.

If I disable comments, everything is fine.

Does anyone have an idea as to why this happens?