Analysing Music In Rekordbox

a track analysed in rekordbox will enable you to quantize to the beatgrid, export info such as hot cues, cue points and track key. 

what exactly do you mean by "dodgy"

I have experienced my USB crashing. Where is goes in to auto loop mode, or says 'waiting', and I have to switch off the CDJ. Which is a nightmare when playing live in a full club...

So I was wondering if this is an issue with the track. IF it was, then should I be pre-analysing each track to make sure it is fully working, before putting it in to my Rekordbox?

Hope you understand what im saying?

Not had it myself to be honest. What USB are you using. If the track plays fine on everything else I can't see it being the track. Really RB is for the analysis process more than anything so everything is ready for when using with various pioner equipment. It's a great track organiser also but if your using pioneer RB enabled players then you should really be analysing everything.

Rekordbox will analyze the file but not check for errors, I have had issues with tracks that emergency loop and it was errors in tracks even though every other software played it fine, the CDJ would "crash"

for the last year or so i use MP3 scan and repair to scan the tracks before they hit Rekordbox but that still isn't 100% error free being the CDJ has bugs that could cause the E-Loop

Basically I was having issues with multiple Sandisc 3.0 USB's (bought from new).

They were crashing every night at some point, which was extremely frustrating!

I am not sure wether it was the USB, laptop, or tracks... but I was told that  should be pre-analysing my tracks, to make sure none are corrupt.

I have a new laptop, and have wasted hours upon hours re downloading my main music. But have lost about 3000 tracks along with my old laptop.

So far I haven't had any more issues, but I want to be certain that the problem isnt because of corrupt files.

i believe (and i may be wrong, i have to look) Pioneer was against Sandisk, known issues and stuff in compatibility

https://forums.pioneerdj.com/hc/en-us/community/posts/204344096-Best-USB-128gb

Yeah stay away from SanDisk and other cheap crap. Get a decent stick like the patriot. A little more expensive buy worth every penny.

Wrong. Wrong. Wrong.

Be sure to read the entire post referenced above re: USB flash drives and do your own research with reputable websites prior to simply throwing own assumptions and accusations with no legs.

The low end SanDisk i.e. the SanDisk Ultra (in addition to any low-end or "budget" versions/tiers of external sdd/hdd/flash drives) should be avoided at all costs.

The higher end versions (ex SanDisk Extreme Pro 128GB) are fine. I've used a pair of Extreme Pro's for the past year and a half without a crash or other performance related issues. If you review the previously referenced forum post, you'll see @Pulse says the same thing.

Lower end flash drives (and hard drives) use budget chipsets. These are good for simple tasks like handling Word docs and occasional read/writes, but are piss poor for something that requires consistent, high-performance reading (like when used in a CDJ) and writing (like adding tracks from RekordBox). There's a reason peripheral companies offer different tier models of their flash/SSD/HDD products, so don't cut corners when it comes to purchasing a high quality flash/hard drive. You wouldn't buy a sports car to transport a family of 6, so don't purchase a low performance drive for something that requires peak performance.

Yup, the ExtremePro is the ONLY SanDisk model I would recommend.

You say the Extreme Pro is the only Sandisk usbyou would recommend...
What about the standard Extreme?

And why would you not recommend other Sandisks?
Is it because they are slower, Or because they are faulty? Please explain