I tried tx with part of the coins and the error is the same. I even tried doing the same from my second PC and I get the same error no matter what I try (GUI, CLI, local node, remote node).
I can not compile what You have suggested myself because I guess I need to run Linux. If You can send me binaries I would try it to report what happens in that case.
With trial and error I figured out that there is a problem with wallet if You want to use send all option. You need to play with available balance to make tx work...
Building the CLI on Windows isn't hard, just follow the instruction here: https://github.com/aeonix/aeon#on-windows
Anyway, here's the binary I've built for you:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
https://www.dropbox.com/s/3b6uly3ds55g6fc/aeon-getouts-errmsg.zip
SHA256(aeon-getouts-errmsg.zip)= 26611c4cc504aa4ebf8b84a5810f103b5610dea791bf4d708caa3387e22aedda
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=GqGT
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If you found a problem in the software, please provide more details (e.g. how to reproduce it). Also, generally it's easier to discuss this kind of development-related stuff on GitHub (https://github.com/aeonix/aeon/issues/new).