Support » Plugins and Hacks » Axact Author List Widget » [Resolved] "The plugin does not have a valid header."
5 years, 6 months ago
I just updated KNR Author List Widget to 2.0.0, and it showed that error message and deactivated the plugin.
I believe WordPress keeps track of the filename that it loads for a plugin. Version 2.0 of the plugin moves the header and the widget code into a different file for better structured code.
I believe all you would need to do is re-activate the plugin. Give it a try and post back to the forum if you need any help.