I just recently found the geotechnical module in Civil 3D and I'm trying to use it to model underground orebodies. I used the profile feature several times yesterday to create cross-sections of the deposit, but today my profiles won't show anything at all. I've attached a screenshot. The left is my drillholes and cross section lines and the top right is the blank profile. I can't get it to show anything more than that despite it working yesterday. The only thing I found online was to restore my computer, but there has to be another way to fix this problem, right?