Datalog file becomes empty after I save or download

[gori]

- serial number of your FlashPro: FP-2K-US-30811
- FlashPro Manager version (not 'the latest'): FlashProManager V1.8.1 beta (Bluetooth)
- the calibration: custom
- a datalog of a problem: attached
- what sort of vehicle you have: 08 S2000
- what sort of ECU you are using: Stock
- anything about the car which has been modified from stock which may affect the ECU (don't include what sort of rims you have nor stereo etc): none
- a specific description of the problem

My datalog file becomes empty after I save or download it on my computers. It occurs on one specific calibration (custom), but it works fine on all other calibrations. I tried downloading/saving on my various computers with multiple times, but it still becomes as an empty file.

I did search for it, but could not find any related issues yet.
Any ideas??

Thanks in advance.

[gori]

One thing I forgot to tell you guys is that the problem only occurs when I do on board datalogging.