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keep getting an error message

I keep getting this error message when trying to upload xml file to install adons
i tried more than one addon
Please enter a valid callback method

i keep getting the error from both my local host and the server

Jake Bunce

XenForo moderator
Staff member
That likely means you haven't uploaded the files for the addon, or they were uploaded incorrectly. The addon should have a directory inside of the library/ directory.