This camera worked well since a long time with MaximDL5, also after a Notebook change and with MaximDL 6.13. After some months without use all drivers were updated, and after this the filterwheel does not work anymore. Camera and guider are working, FW is dedected. But no movement possible. But when using CCDOPS it works! Also with a demo download of the latest MaximDL version on a different PC. So it seems to be a incompability of the latest drivers with MaximDL 6.13. Updating to the latest MaximDL version is not an option as the update licence has expired and it would mean buying it new.