Hold off on upgrading to DNN 9.4.2 due to a breaking change that affects many of our modules. What Happened? DNN 9.4.2 was released on Nov 12th, 2019. One of the method signature in this release was changed resulting in a breaking change for many of our modules and potentially many others. The issue is reported at https://github.com/dnnsoftware/Dnn.Platform/issues/3289 What's Next? Wait and upgrade to DNN 9.4.3 when it's available. At this time, we recommend skipping DNN 9.4.2.