I recently installed a hotfix for MaxEnt 8. Initially there were no problems but when I gointo the the Administrator of a database (there is only 1 database defined) I get the following messge:

Warning! The Product License Number ..... is already being used by another MaxExchange Site associated with this Address Book. This he Product License Number cannot be applied from this site to this Address Book. In a MaxExchange Synchronization environment, each Product License Number can only be installed on one site.
To correct this problem
a) If this Product License Number is not for this site, remove this Product License Number in the Administrator module
b) If this Product License Number is for this site, remove this Product License Number from the other site, perform MaxExchange synchronization, and then open Administrator on this site to Activate the license on this database again

In this case B would be the correct option but I cannot see where what other site this is referring to. There is only 1 site here. Where do I look to see where the other site is? Thanks