Hello @lariana,
usually this error is when a config Focal length / FNumber is not in rages supported by the DxO Optic Module.
For example, here, photos taken at F2 won’t be supported by the module for Canon EF200mm F2.8L II USM.
If you think the Focal length / FNumber should be OK with the Canon EF200mm F2.8L II USM please provide me some files to analyze on http://upload.dxo.com.
We have to work on htat message to provide something cleaner.
Regards,
Marie