Hi Graeme, hm... maybe it's time to send my instrument to xrite. The last revision is at least two years old. Anyway, argyll is the first solution that indicated the possibility of a hardware problem witch can be leaded back to the instrument. The Eye One I use is quite an exploited one. Regards Vladimir -- Gesendet von meinem Palm Pre Graeme Gill <graeme@xxxxxxxxxxxxx> schrieb am 22.04.2010 23:30: Vladimir Gajic wrote: > I solved my problem on a quite strange way simply by connecting another Eye One and > calibrating it. Afterwards I reconnected the previous model. It works fine now. Maybe > you have an idea? Not really. It could be co-incidence. The i1 and Munki drivers save the calibration to a file in the executable directory (.i1p_SERIALNO.cal and .mk_SERIALNO.cal). It's possible that this might cause the instrument to get in a strange state. There's no harm in deleting these files, they are just a way of retaining the calibration for use with the -N option. But this doesn't explain why connecting another instrument would change anything. Graeme Gill.