Error executing code: Wrong argument type for function SysDataBaseLog\Methods\setDescription - line 8

Hi,

In AX2009, i am getting following error while updating a record, please help.

Error executing code: Wrong argument type for function.

(S)\Data Dictionary\Tables\SysDataBaseLog\Methods\setDescription - line 8

(S)\Classes\Application\logUpdate - line 28

(S)\Classes\xRecord\update

The setDescription method of SysDataBaseLog table gets the TitleField1 and TitleField2 of the table being updated. My table has TitleField1 as RefRecId and TitleField2 is sysContainer type. I am updating the second field.

Regards,

Amiya