Visual Basic for Applications Reference
Automation error (Error 440)
See Also Specifics
When you access Automation objects, specific types of errors can occur. This error has the following cause and solution:
Check the properties of the Err object to determine the source and nature of the error. Also try using the On Error Resume Next statement immediately before the accessing statement, and then check for errors immediately following the accessing statement.
For additional information, select the item in question and press F1.