Within Access It! Universal.NET, an error message is raised stating "Unable to cast object of type 'System.DBNull' to type 'System.Byte'."
This is caused in older versions by editing a cardholder and cutting the image out, resulting in a Null value in the Images table. When the "View Cardholder" option is selected in the Events Feed, and a cardholder with a Null value in the Images table is displayed, this error will occur.
Using the Database Configuration Utility or SQL Server Management Studio, take a backup of the AIUniversal database.
Once the backup is complete, run the following script:
USE AIUNIVERSAL DELETE FROM IMAGES WHERE IMAGEDATA IS NULL