Falling off the Map in Gendarren Fields
You may have a corrupted file. You can -repair the client by following the instructions found here: Top of Page – Services/Support – Knowledge Base – Tech Support – Repairing the Client.
Good luck.
This sort of thing can be induced in certain ways. What’s more important to ask is what weapon you are using when this happens, and is it consistent regardless of where you are in GF and do the circumstances matter? You make it sound as though you can go anywhere and be doing anything and always end up under the map after hitting #4.
It doesn’t sound like a file corruption thing, but a server side thing.