No Gimbal Lock...this happens, when you scaled the parent object non uniformly on Object Level. Don't ever do this...if you want to scale, go into Element or Vertex Subobject, select everything and scale that. If you absolutely have to scale on object level (don't know any reason for that...) then make sure the object is…
This is a problem I've run into on and off for a few years that seems to just sometimes occur and sometimes not and the cause has been just invisible to me. This is several objects linked to eachother in 3dsmax (much like a biped). Everything was working fine just before my last save and now when i try and rotate the arms…
Vig's right, reset scale should do the trick without blasting everything else. If that doesn't work, try creating a helper obj, then matching it's position and orientation to the pivot of the object before you reset xform. Then you can position / orientation match the pivot of the object you reset to the helper, restoring…
Reset xform will do the trick but it can be like using a nuke to kill a fly. It will reorient the objects local pivot to the world, which for animators can be a bit disastrous. Like Piflik said its a case of the scale transform data needing to be cleared out. You can do this by going to the Hirearchy tab > Reset > Scale…