When trying to import a hash set using the KFF Import Utility for the first time, you receive Import Error "Object Reference not set to an instance of an object".
1. Stop the AccessData Cassandra Service
2. Navigate to the Cassandra Directory. Default location is: C:\Program Files\AccessData\Cassandra
3. Delete the DATA folder
4. Start the Cassandra service
5. Try your import again
Important Note: The Cassandra "data" folder contains the Cassandra database. You should not delete that folder if you wish to preserve any hash sets that have been loaded into Cassandra.
An error with the Data folder is preventing proper communication for the Import utility. This resolution will rebuild the data folder when the service starts again.