Part features' errors !!!

I got a part from anohter engineer and everything looks ok
Soon I tried to modify it, I got errors from other featues whichhave nothing to do with the modifications I've just made. Then Itried to undo what I changed, the features' erros are still there
It's totally ridiculous and really wastes of time
I've never seen some like this in Inventor
ChrisSolidworksParts And Features