I upgraded my site from 4.3 to 4.4 today (fixed a few issues i was having) but now when i try to go to admin/configure/themes i get this error message:
Fatal error: Class theme_marvin: Cannot inherit from undefined class basetheme in /home/jmw/trappedinhell.com/html/themes/marvin/marvin.theme on line 4

anyone know how to fix this or to bypass it to change the theme?

Comments

voipfc’s picture

Delete those themes from the themes directory and edit the user table in your database directly and change any existing references to them to a blank value or preferably chameleon.

It is an issue which which is not properly highlighted for upgraders in the 4.4 release note.

You are not the first to trip over them and you are unlikely to be the last

kjbland’s picture

I've had this problem too (although not stemming from an upgrade, but rather a clean install). What steps do you suggest in doing this? I'm a little new to this whole thing, so I'm not entirely clear on what you're suggesting.