C611 Error

@Stuart > What version of Rekordbox and what is the firmware on the CDJs?

CDJ2000's are V3 and Rekordbox is currently V1.5 but this also happened on the previous version. 

I don't understand why Pioneer do not address this problem once and for all, this has been going on far too long. 5K on products and let down by poor buggy software, Come on Pioneer sort it out

@Stuart > Your player firmware is seriously out of date; consider upgrading to 4.04.

I have upgraded the firmware to 4.04 and get the same results!!

I have the same problem as well. 

How ever, My firmware is 4.01 for the CDJ 2000s. 

My setup is 2 cdj 2000 and 1 djm 2000. I ethernet link the cdj's to the djm, and i connect the rekordbox via ethernet through the djm 2000. Same as the other posters, I can have it fine on USB, and or when viewing the song through rekordbox, but i do not have playback from rekordbox when connected via "pro dj link". Unfortunatly the "Pro" part seems to be quite some Professional problem that needs to be addressed. 

I have the same problem. It works fine in Rekordbox(1.5) playing the song. It works fine using the browse function on the CDJ 2000( ver 4.04). When it is added to the database in Rekordbox, If it is exported to the drive or dragged to the player via Rekordbox you received the C611 error. The songs are purchased from Beatport. I wonder what causes this to happen.

Shame Pioneer can't sort this out, it's obviously something to do with the way Rekordbox analyses the tracks or the CDJ's reading the analysed track. Looks like I may have to look at Traktor or Serato!! Wish I would have known before I spent 5K on this kit!!