How to fix the "Method not found" error?
ModPlus is a component application and its various components are updated separately. Many components, including plugins, use methods from auxiliary libraries located in the ModPlus/Extensions folder. Support libraries are updated automatically using the auto-update module.
If you see the message “Method not found”, then you are using a component that has been updated, but the auxiliary libraries have not been updated.
Close all applications using auxiliary libraries (Configurator, AutoCAD, Revit, Renga), wait until the auto-update module icon turns blue and run the update check.
You can also upgrade using the web installer