Cant play dimension pro with Tyros2

Hi
 
I have Sonar PE 8.5.3 and Dimension Pro came with it but I am having big problems trying to play it.   I am using the UA101 midi'd up to my Tyros 2 keyboard (midi out to in and in to out 2 cables) but I cant seem to play the sounds using the tyros2,   I can play the sounds in Zt3a but not Dim Pro.
 
I am particularly looking to play the solo violin ensemble sound in the GPO section of Dim Pro but I cant get ANY of the sounds to play and when on a rare occasion I can,  the notes just keep on going and wont stop sounding.  I know there was an issue with Cubase but as I am using Sonar and a UA101 so I thought that compatibility wouldn't be a problem.
 
Please help
 
Nigel