Moved to ePO for a faster response.
Same issue for me
What happens when you install the sensor manually?
I did face the same issue.
You need to import RSD into the Master repository manually, you can't do it via the Software Manager (only the extentions you can add via the Soft Manager)
I couldn't find anything about this in the manual (or I must have overlooked it?)
Note that you can't deploy RSD to clients that have WinPCAP installed.