I am getting errors 1058 group policy

Our network is running on Windows Server '08 R2 and I have just added a second domain controller when I started getting errors (error1058). It says that the Group Policy processing has failed. I tried troubleshooting and noticed that the URL has "\mydomain.private" at the begenning but the help files I have read says that the server name should be at the start instead of the domain. Why did this happen and what can I do to fix it? As of now, the users are not affected and there are no errors on the current DC.
