ARD 'Connection Failed …' Message.

Hi.

I recently purchased ARD and am attempting to control a remote Mac mini. I can connect, i.e. the remote computer appears under 'All Computers' in ARD and its 'Current Status' is 'Available', but when I try to 'Control', by right clicking on the remote computer and selecting 'Control', I receive the following message:

'Connection failed to "[XXX Mac mini]"

Please make sure that Screen Sharing (in the Sharing section of System Preferences) is enabled on the computer to which you are attempting to connect. Also make sure your network connection is working properly.'

I haven't been able to enable Screen Sharing on the remote computer at the same time as Remote Management is enabled. The following message is displayed under Screen Sharing:

'Screen Sharing is currently being controlled by the Remote Management Service.'

Please assist?

Thanks,

Karl_NZ.