Using 3.9 in a ASP.NET (vb) Web Form system. Thought a day or two ago that it might be easier to upgrade, etc., if I just put the NuGet packages in instead of direct references. Big mistake--obviously. Have been having hand-to-hand combat with it ever since. I used source control (git) to go back to before the changes were made, but the web server is still apparently having problems. Occasionally, I am getting Handler errors that I can't figure out and wasn't getting before. Nothing I do helps. Any ideas on what to try or what to do?