prim34629:Primavision/myPrimavera administration application will not open. Getting error: “java.io.IOException: Io exception: Bad packet type”

 Then application error window is received:  “Primavera Administrator  Io exception: Bad packet type    See log tab for more details.”

For Oracle database, log in as admuser
For SQL Server database, log into the database via Query Analyzer as privuser
For MSDE database, log in as privuser via OSQL command line utility:

     osql -U privuser -P privuser_password -S server\instance_name  -d database_name

Run the following script:

delete from admin_config where config_name = ‘Configuration_Name’

Where Configuration_Name is  the name of the first configuration being reported in the Administraction Application as having a Bad Packet Type.
For example shown above you would run the following:  

    delete from admin_config where config_name = ‘New Primavera Configuration’