This is because the  clients_key parameter in the configuration_variables database table stays the same and is only rebuilt when a Print Client is downloaded the first time after clients_key is updated to NULL.  If the URL changes or the Access ID changes you need to set clients_key to NULL so the key will be rebuilt when Print Client is downloaded the first time in the new environment 

Basically the original key value is still stuck in a database table named configuration_variables. This value needs to be set to null and the print client installation steps can be taken and should succeed. This can be done by logging directly into the CISPro Database Schema and using the following SQL Statements:

•    select * From configuration_variables where variablename = 'clients_key'

•    update configuration_variables set variablevalue = NULL where variablename = 'clients_key'