Error while exporting specific playlists

0) Have you read the "READ ME FIRST" thread in its entirety AND TRIED THE SOLUTIONS THERE before posting: No, it's too long and don't really need help OR Yes, I swear it!

1) Operating System: Windows 7

2) OS Type: 64bit

3) rekordbox version: 3.0.1 rev 2408-3416

4) Using LINK: No

4b) Using with CDJs: Yes. 2000 + 2000 nexus, latest firmware

5) Hard drive / Flash drive / SD card file system: Flash drive FAT32

** 5a) Does the device have multiple partitions*:  Unsure

* 5b) If it's a flash drive, is it a U3 device*:  Unsure

* 5c) With what utility did you format the device*: Windows

**6) Have you scanned your files for errors: Yes

**7) Have you scanned your drive for errors: No

**8) Is rekordbox crashing at all: , Yes

* 8b) If not crashing, are there any error messages*: Yes

**9) Are you able to repeat / reproduce the problem: Yes

* 9a) If yes, can you do it consistently*: Yes

**10) Does the problem occur with one specific song: No*

12) Provide as much detail of the issue here:

I've never had any problems with Rekordbox until now. I migrated my whole collection before 3.0.1 and after that I had no problems. After I installed the update, this problem appeared.

When I export my playlists to my USB, the exporting stops and the error message "An error ocurred while exporting" appears. If I press ok and then start exporting again, after a while, the message appears again. After doing this a couple of times, all the tracks are ultimately exported. Though, when I open these specific playlists on for example the CDJ 2000-nexus, the songs displays correctly and works perfectly, BUT the waveform and hot cues are gone. This problem only affects these specific playlists... What should I do?

Thanks in advance,

Robin