Welcome, Yolanda
First I'd suggest running an audit on your dwg & any xref dwgs you may have included in your file, just to rule that out.
Personally, I don't use intersections that often. I prefer to use connected offset alignments with FG profiles for curb returns, which I then run a curb return assembly along, using the offset & centerline profiles as width and elevation targets for the corridor. While this method does generate a lot of named objects (and clear naming becomes VERY important down the line when you're trying to figure out which corridor\alignment\profile you need to tweak) I find it to be a lot more stable and the results are pretty clean.
I detailed this method in post #7 here
Hope this helps. Good luck! Be sure to ask for help if/when you need it!
Joel Ritner
C3D Certified Professional
BIM/Systems Manager
Najarian Associates, NJ