Every few patches I get the data file corrupted and heres the solution.
1. Download Razer Game Booster (Link:  https://www.razerzone.com/au-en/gamebooster)
2. Install (follow on screen instructions)
3. Run and click on the tools tab then click defrag.
4. defrag Navyfield
5. Download  patch from Navyfield website.
6. Run patch and start the game.

It should work.