The "ReferenceDatabasePages" Web Part appears to be causing a problem. One or more field types are not installed properly. Go to the list settings page to delete these fields.
Web Parts Maintenance Page: If you have permission, you can use this page to temporarily close Web Parts or remove personal settings. For more information, contact your site administrator.
Troubleshoot issues with Microsoft SharePoint Foundation.
Correlation ID: a3a1de6d-9b8c-447a-9216-b7e12f29c92e
Date and Time: 8/1/2015 11:17:23 PM