[TxMt] Latex and Stop task before closing

Hi, I am new to Textmate and am thinking about migrating to Textmate from Texshop to handle my LaTeX, Sweave, and R needs. One thing that I have noticed is that if I run Command+R on a LaTeX file and have it set to use Textmate to view my PDFs it will always say "Stop task before closing? The job that the task is performing will not be completed." and a spinning cursor like thing in the upper right corner. However, it appears that it has finished the task and the PDF looks fine.

Why is this doing this and how can I prevent this message from coming up again?

Also, it appears that Textmate is using Acrobat embedded in Textmate as the PDF viewer? Is this true? Thanks! Chris