Recordings on NBC network stop after about 14 minutes

[Tacoma]

Recently, all but one program recording has stopped just after 14 minutes on the local NBC network affiliate. The problem programs have all been one hour programs. Recordings on all other networks are as scheduled in length. This problem was occurring on two separate installations of NextPVR. I contacted Schedules Direct to check if there was a problem with their EPG. They checked - no problem. Out of desperation, I reinstalled NextPVR on both PC's. Problem disappeared.