Two problems

Hi,
I added a few plugins and all was well until I got this error and can’t get to admin panel any more and am getting this error on Blog

Warning: array_filter(): The second argument, ‘Array’, should be a valid callback in /hsphere/local/home/jlherron/characterdriven.org/wordpress/wp-includes/capabilities.php on line 152

Warning: Invalid argument supplied for foreach() in /hsphere/local/home/jlherron/characterdriven.org/wordpress/wp-includes/capabilities.php on line 1

Also, a dumb question, but the .txt file is in German(?) so can’t figure out how to integrate MyGallery into the blog itself.

Thanks for any help…