Hi there.
I've some troubles with my two CDJ-2000 NXS Decks. I use them combined with an DJM-2000 NXS. All devices are updatet with the newest Firmware (1.21 on CDJs and 3.20 on DJM). Music is analyzed and stored on two Samsung SDHC 32GB Cards ( http://www.samsung.com/in/consumer/memory-storage/memory-cards/sdhc-pro/MB-SGBGB/CN) with the newest RB. One card is for backup.
The two players are connected via network cable (original shipped with the Players) and SPDIF-cable (mostly on channel 2/3) to the mixer. Each player is equipped with a sd-Card. One for playing and one for backup, if the other one fails.
In rare cases I got an emergency loop error, sometimes combined with loss of link of the affected player. This could occur already after the second song, after the 50th song or after the 100th song. Once this sh** happend a few times, i decided not to use the link-function between the two Players - but nothing changes. The two sd-cards are both testet for memory fails on my computer. There are no problems. I also reformatted them a couple of times. but also this didn't provide any result. In the last step i bought a new sd-card of the same type - no improvement.
Does anyone have an idea? I paid just about 6000€ for this gear. And now I'm really frustrated about these problems, because the players don't work reliable.
(PS: Sorry for my English. I come from Germany and English is not my personal favorite ;) )