The concurrent snapshot for publication 'xx' is not available because it has not been fully generated or the Log Reader A

I am having all sorts of trouble getting SQL Server (2005) to work properly. When I run the client (SQL Server Express 2005) I get the following error "The concurrent snapshot for publication 'xx' is not available because it has not been fully generated or the Log Reader A"

The error is cropped off.

I have tried: - Deleting the subscription - Deleting the publication and starting again - Restarting the server and client. - Shrinking the database

All without any change.

I know that the client can see the network share \servername\repldata which has a UNC subfolder with the snapshot in it (a folders deeper with the pubName and dateTime encoding as expected)

Any tips or trips would be REALLY appreciated