Thinapps won't deploy to desktop pool

Hello:
We are deploying a new environment for Horizon View 6.1.1.  Everything seems to be working well, except for our Thinapps.  We have our first desktop pool set up (persistent and dedicated).  If I assign any of our Thinapps to the pool for full installation, they do not install. I've tried logging out and logging in to make sure, and nothing.  I have looked in the logs and don't see any errors that might indicate why they are not installing.   However, if I assign the Thinapps to a machine or group of machines, they install just fine.  I've seen other posts on this issue but no solutions.  Any ideas of what could cause this, or what I can check?  Thanks for your help.