Make sure you use another process name, by default the IRPROMGR will be named $STM, use something like $P11 for the IRPROMGR object. Also you will need to have another port assigned to the newer version and it will need to be opened up on the firewall. By default Prognosis is installed on port 1960, the newer version could use 1970 as an example. Also make sure to open the other ports associated for Prognosis (ports 1970 through 1979)
