[OSM-talk] gpx import problem?

[graham]

All my gpx imports are failing with no tiles assigned; errors such as:

Mysql::Error: Column 'tile' cannot be null: INSERT INTO gps_points 
(`timestamp`, `latitude`, `altitude`, `tile`, `gpx_id`, `longitude`, 
`trackid`) VALUES('2007-09-10T15:00:35+00:00', 42455527, 442.343872, 
NULL, 38444, 13926608, 1)

Is there any known reason for this? (I've been away for a few days and 
may have missed the relevant emails in the flood ...)

Thanks
Graham