RE: [SS4] .NET Error: Attempted to read or write protected memory. at Bentley.DgnCache.FindAppData

Thanks for getting back on this. I probably already had the dynamic cross section view opened when I changed the feature definition, but I couldn't swear on it. Other than that, I have no additional information on reproducing it. I, for one, haven't yet seen this error come back up and don't suspect that I will. But when I do see it again, I'll surely find this thread and post more information.