Command Classes deleted for some devices

[magadheera]

Hi,

I have following problem, can some share there ideas or solution if they have encountered with same problem.

When read z-way data, Data/0 command. In this data file some devices command classes are empty why is so and possibilities to occur this kind of error?

[PoltoS]

More details needed. Have you rebooted the box?

We know few clients having same, but it happens sometimes after reboot and this seems to be related with Raspberry Pi SD card handling - filesystem files written recently before unplugging are lost or kept unchanged

[magadheera]

If you not mind, can please give me more explanation on this issue, which issues causing this problem and how to avoid this. And how can make this files safe?. Thank you.