What version of the SCOM Mgmt Pack are you running? For R2 you need 1.1
I am using the 1.1 MP that I just downloaded yesterday and I am getting the same "healthservice" error. I have SCOM 2007 R2 running on Windows Server 2008 R2.
Any other suggestions?
I experienced this same issue with SCOM 2007 R2 and Windows Server 2008 R2.
Other posts on thwack mention adding the action account, data writer, and data reader accounts to the local admin on the RMS, or updating the host file, but these tips did not work for me.
I turned off UAC and this appeared to fix the issue.