Fatal error: Cannot use string offset as an array…

Hello,
After installing this plugin, I keep getting the following error when trying to login to my wordpress account:
Fatal error: Cannot use string offset as an array in D:\Hosting\3108989\html\wp-content\plugins\app-your-wordpress-uppsite\uppsite.php on line 588

Please help me fix this! I can’t login or do anything without getting this error!

Thanks,
Lauren
lmontague@chworks.org
760-755-5475

http://wordpress.org/extend/plugins/app-your-wordpress-uppsite/