This problem is related to the antivirus you have installed. If there is antivirus Avast such a problem is accurate. Just add the ModPlus folder to your antivirus exclusions. Also read this article
The function is purchased for a particular version of the AutoCAD. If you used the 2015 AutoCAD and installed the 2016 AutoCAD, you should buy the paid features again
Letters from the site can be found in the Spam section. If there is no message from the site in the Spam section - write to us
ModPlus software uses multiple folders:
All listed folders must have write access for the current user
The registry stores all the basic settings of ModPlus, settings of the auto-update module, menu structure, information on installed plugins and entries about the news shown.
All settings are located in HKEY_CURRENT_USER\Software\ModPlus
Attention! Do not change the data in the registry manually!
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