Thanks for the suggestions, but I found the solution. It had to do with the fact that the Citrix server I am using is 4.0 and that does not gel with ZenApp...so the fix is to ensure that theRequireLaunchReference parameter is set to Off and that OverrideIcaClientname is set to On in the XenApp Web site configuration file that is in the inetpub\Citrix folder, the file is called WebInterface.conf.
Thanks again, maybe this posting will help someone else.