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Permalink Reply by Paul Atherton on May 24, 2015 at 6:43am

I get exactly the same with MP 1.3.27 and Arducopter v3.3RC5. I have no idea what it means, but good for those experiencing this to report it here so devs can realise the scope of the issue.

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Permalink Reply by Andre on May 25, 2015 at 11:55am

I also got exactly the same with MP 1.3.27 and Arducopter v3.3RC5.

Any Idea to solve?

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Permalink Reply by Bruce Parmele on May 25, 2015 at 12:05pm

Same issue after the upgrade.  I am now grounded......

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Permalink Reply by Jason Franciosa on May 25, 2015 at 12:11pm

You should be ok to fly with it. From my understanding it is an issue with a new ardupilot parameter that mission planner doesn't know how to properly interpret yet. I flew yesterday with it and worked perfect.

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Permalink Reply by Bruce Parmele on May 25, 2015 at 12:26pm

I am setting up a new vehicle. I'd rather wait until the issue is resolved before I maiden it.  It's ok though, raining here in NW Florida anyway.... I'll shoot for next weekend.

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Permalink Reply by Aeropixel on May 25, 2015 at 4:15pm

I'm also having this problem. It started to happen this error after I've updated Mission Planner today to 1.3.27

I have pixhawk installed on a plane and I have firmware version 3.3.0

I can't even arm the motor because this error seems o be fatal.

I was today supposed to make the first flight, and this was really a very anoying pain!
Does anyone else knows how to solve this?

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DeveloperPermalink Reply by Grant Morphett on May 26, 2015 at 4:21pm

There is a new version of MissionPlanner 1.3.28 which I believe should resolve the issue.  Please upgrade to it and let us know how you go.

Thanks, Grant.

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Permalink Reply by Aeropixel on May 26, 2015 at 4:26pm

It worked! That nasty error disappeared.

But still, I can't arm the plane and test the motors at home, where I don't have GPS signal.

I used to do it without problems before. Is it a new feature of the most recent firmware?

Thanks anyway for the help!

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DeveloperPermalink Reply by Grant Morphett on May 26, 2015 at 5:16pm

Whenever a new release is done everyone should read the release notes as they contain valuable information regarding the new features and behaviours in the new software.  If you have a look here

http://diydrones.com/profiles/blogs/apm-plane-3-3-0-released

You will see the first section is on the new Arming functionality and it refers you to this link

http://plane.ardupilot.com/wiki/arming-your-plane/

which describes the details of plane arming.

Thanks, Grant.

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