File Plug-in strange behaviour

Hi all,

I'm trying to publish a stream using my own File Plugin but I don't understand how the FMS wants to use it.

When I publish a stream using NetStream.publish("streamname", "record") the FMS:
1.- opens the file to read
2.- query all the attributes of the file (using the handle). I return size '0' (the file is empty).
3.- tries to read 294912 bytes.
4.- the file is empty, so I tell the FMS that I've read 0 bytes.
5.- closes the file
6.- queries all the attributes of the file (using the name).
7.- open the file to read & write
8.- queries again the file.
9.- tries to read 294912 bytes, but the file is empty.
10.- closes the file.

The client gets 'NetStream.Record.NoAccess'.

I don't know what the FMS is expecting from the File Plugin. I'm trying to follow the documentation and the examples, but it doesn't work.

Any clues?

Thanks,

Jorge