i think it may have to do with the PHP version. I changed hosts and am in the process of transfering my domain. I decided to use Site5 because they have the 1 click install for Moodle 2.4.1
As soon as I get my domain transfered, I will let you know how it goes. When I contacted Total Choice Hosting about the PHP version and the possibility of supporting Moodle 2.4.1, the support person knew less than I did, which means negative knowledge! That is when I knew I had to jump ship.