Tried to use my F100 today and encountered the following problems.

1. With the vertical grip, when I pressed the the shuttle botton,
- Err appeared on the view finder (this appeared even when the lens was not mounted)
- CUSTOM also appeared on the view finder.

2. I removed the grip and switched to using the battery holder. I was not able to power up the unit.

Other than send to NSC, help is much appreciated. TQ.