If you have upgraded to Yosemite and are getting a message similar to the one below when you are trying to run Groupwise you need to install Java.
Click on the more info radio button and it will take you to the page where you need to download Java. If you go to this page and the page is blank you will need to change your browser settings. If you are using Safari go to preferences and delete apple.com from the list. Now try going to the page, http://support.apple.com/kb/dl1573, or http://support.apple.com/kb/DL1572. Download and install the update and this should fix your Groupwise problem.