Devo10 warning?

Hi everyone, I'm new to the site.
I recently purchased a Devo10 in mode2. I installed Deviation vers 3 and the file system from vers 2.1.
All appears okay except for one minor error.
When switching on I get a warning that Ch1[Ele] is 0% and safe value is -100?. If this were on Ch3[Th] I'd understand it.
How can I correct this issue?

Thanks FDR, Thanks for your quick response.

I installed file system version 3 as advised and initially all was okay.

Then I changed protocol to DSM2 and the problem came back. Haven't found a way round it so far?

When you changed the model or restarted the tx it should be gone.
This is a known problem because some variables are not initialized directly after changing the protocol but rather when the model is reloaded.

Thanks guys for your quick responses. I seem to be getting around the problems now with your help.
This is where I am at the moment?
Mode2
DSM2
Plane
6Channel
Throttle left stick[Ch1]
Rudder left stick[Ch4]
Ail right stick[Ch2]
Ele right stick [Ch3]
Gear gear switch
Ch6 3position mixer switch

I got here by loading a template for 6ch plane.

I did try editing the mixing without success. Thanks again guys.