Provides stack traces for XML PatchOperations in RimWorld. Standalone version of the same feature from XML Extensions.
Here is an example of a trace for a broken patch (you can easily figure out the error is that the letter "N" should be capital in defName):

The vanilla error message for the exact same patch (only reports the parent patch, not the one that actually failed; no clue as to what went wrong):

Load order does not matter.
Also check out XmlDocument Viewer for another helpful XML modding tool.