If you have just installed cPanel on an OpenVZ environment powered VPS (Virtual Private Server) you might find that :
Initial Quota Setup
Might fail, this is more than likely due to second 2nd level quotes not being enabled or setup correctly by your OpenVZ VPS provider.
Simple Solution : Ask your VPS provider to enable 2nd level quotas for your OpenVZ container. We would normally a user-group limit of 65535, this is normally more than enough for most situations.
Learn more about OpenVZ