In one file called xs.dgn, I've cut cross sections for all the other alignments I need cross sections for, and they all turned out fine. For the last alignment, it seems to be stuck in an infinite loop that won't give me an exception error or anything.
What I see in the status bar is "Method Requires Triangulated DTM" which I have, and "Displaying Cross Sections" in case that helps.
It may be worth noting that when I try to view dynamic cross sections for this alignment in any file other than the one in which it was created, it says there is an unresolved reference. I went into the file in which it was created, went to ObjectSpace Browser and saw nothing highlighted in red. I can process the corridor fine. But even so, this should have no real effect because this corridor has been represented on other alignments' cross sections anyway, so I'm not sure that this has anything to do with it.
Any ideas?