Yeah it was rare but lately i`m getting this problem almost any flight. For a while a thought it has something to do with ingame ATC changing frequencies but now i`m not sure.
Tva,
Can you attempt a reinstall of the GTNXi from the GPS Manager?
I've reinstalled with version 0.5 and done a couple of short flights with no errors. Seems fixed, i`ve used a combination of vatsim and ingame atc to try and confuse the unit
We are glad that this solved the problem, please enjoy the TDS GTNXi.