I use the rotate botton for the (X,Y,Z) alot to change the aircraft or object  in g-max while I'am building but, their's something that I did to g-max the I can't fix or find out how to fix. I was saving my project with Ctrl+S to save, but I think I tapped another key. I'am trying to get the axes to highlight (X,Y,Z) but they wont show me that I have any of the axes selected. I think the rotate is proffesional mode, I dont know? I restarted G-max but the problem didn't get fixed. Anybody know information about this? or any suggestions to fix my problem thank you.

select and rotate

i had that before, sometimes you hit a bad key and all goes mad

go to preferences and find the option to enable the tranform gizmo, this should bring it back to life

c ya

citation5,

You actually pressed the X key and inadvertently turned off the Gizmo. There's really not a need to go through Customize=>Preference Viewport tab to turn it back on. Just press X again. 

FSEdge