Endpoint not removing Microsoft Security Essentials

Hi there,

We're using SCCM 2012 SP1 CU3 and deploying Endpoint. Endpoint is not installing though. In our client settings the Endpoint Protection component "Automatically remove previously installed antimalware software before Endpoint Protection is installed"is set to YES

When I look in the logs in EndpointProtectionAgent.log there is this message:

System Center Endpoint Protection installation error. One or more programs on your computer conflict with System Center Endpoint Protection.To install System Center Endpoint Protection, you must remove the following programs and then run the installation wizard again. Error code:0x8004FF52. Programs: Microsoft Security Essentials

That surprises me, as the following Microsoft page - http://technet.microsoft.com/en-us/library/4acd0c29-e453-4863-8194-e479263291c8 clearly shows that "Microsoft Security Essentials v1" will be uninstalled.

The version of Microsoft Security Essentials on our client machines is 1.0.2498.0

Any idea why this is not working?

Thanks,

Kieran.