Currently Being ModeratedAug 16, 2012 6:39 AM (in response to Robman)
I would suggest it ML uses version 3.6 of the Client and you are using maybe ARD 3.5. on your host?
ARD is not upward compatible so you have to upgrade to ard 3.6 via the Appstore.
Currently Being ModeratedAug 16, 2012 8:49 AM (in response to Benjamin Losch)
The admin Machine is also on Mtn Lion, so both on 3.6
So, i got it going, here's how i did it:
On the client I had to log in as root and unchecked the Remote Management and re-checked Remote Management.
That must have updated or tweaked the preference, but now it's working properly.
Strange, but that seems to have fixed it..