Updating Terrain on GNS 430 CARD

From the Garmin Av Data manager, the update failed with this message

Install Failure

Install Failure. Please try again.
Error details are below 
-message:

'Core library error occurred in file 'GADM.Core' at line '0' with code '0' with message 'load Failed.''

What does it mean?

How can I complete my update successfully?