Hello,
I'm also trying to connect to a BLue Zone 7.1 Mainframe Session using the instructions I found in the documents for how to set up Rocket BlueZone Mainframe Emulator.
I always get the same errormessage:
'Failed to launch application - Launch failed: Error from ConnectToHostOrSession: An incorrect host presentation space ID was specified. The specified session either does not exist or is a logical printer session. This return code could also mean that the API Setting for DDE/EHLLAPI is not set on. Return code: (1)'