Trex 450 and 600 gone

[Scottlclem]

I been flying the Trex 450 and the 600 on g3.5 for a month or 2. Yesterday I fired up G3 to practice and the 600 was gone. It had a Hobbico plank loaded which was thought was odd, went to load the trex 600 and it was gone!There's a red message on the bottom of the screen that said. The Trex 600 is based on model you do not have. I still had Trex 450 so I messed around with it. Well today the 450 is gone..
Why did they work for so long then stop working? What model are they based on that I don't have?

[Trooper Sam]

Your expansion packs or add-ons may need to be re-installed. Do that and your Rexes should return.

[yogi149]

Hi

if you used the microHELIS 450 + 600: these models are not based on other models. You should simply try to import them again. Overwrite all files when asked.