I was working on a Windows 2003 server tonight and came accross this error in the event log. It turns out my client used to have Symantec Endpoint Software on the server. This is from a dirty uninstall which Symantec Antivirus seems pretty famous for.
Point to Point Protocol engine was unable to load the C:\Program Files\Symantec\Symantec Endpoint Protection\SymRasMan.dll module. The specified module could not be found.
I used the RASMAN fix tool they provide on their website and it did the trick. More information of what causes the issue and a link to the fix tool below: