I agree with EvilProducer,. pics help
It sounds like the strength of the weight painting brush is too strong, ..but you should be able to just “undo” that step, and adjust the strength of the tool, and try again.
use low strength in the weight painting tool, since it Builds up the weight as you brush.
The “Trash it, and start again” solution, is to go to the Animation menu and “Detach skeleton”, which will remove the weight painting.
and ultimately,.. wait for C8.5 with genesis support,... if you want to use genesis in Carrara.