K2 Errors after content migration help needed ASAP!

I have a new site that was just migrated from Joomla 1.5 to Joomla 2.5. We use K2 for our articles and migrated the content over by copying the tables to the new database and changing the database prefix, and setting access in mysql to the categories and items. All the item that we imported over work fine, but new items that we create are created in the admin panel set to published: [login to view URL] But they don't show up on the site. They only show up on the home page of the site in a RokSproket module [login to view URL] but clicking the read more you get a 404 error. We are also getting 500 error when trying to configure the RokSproket module with the new k2 articles. When you first access RokSproket and try to save you get the following error. 500 - An error has occurred. UNHANDLED ERROR [2] array_key_exists() [function.array-key-exists]: The second argument should be either an array or an object /directory/administrator/components/com_roksprocket/models/[login to view URL] doing a Ctrl +F5 and clicking save again the process seems to complete. I don't think this is an issue with roksproket it has something to do with the way imported vs new k2 articles. Please don't bid on this unless you have experience in Joomla 2.5, RocketTheme components, and K2. This also needs to be fixed ASAP so I will not choose you if you say delivery in anything less than a day.