Cannot load wplistcal.php

Make sure that you’ve uploaded wplistcal.php directly into the root of your plugins folder.

It must not be in a subfolder (as with other plugins) – that seems to have sorted it for me anyway (although I’m having another problem with saving my settings…)

The answer is correct, although it’s a pity that the error is there.

If you use the One-Click installer https://anirudhsanjeev.org/projects/oneclick/ with the download link at www.ads-software.com, then it automatically puts in the wplistcal subfolder. I guess that’s because the zip file is a zipped folder rather than a zipped file collection.

Either the files should be zipped without the folder, or the plugin code should assume there is a containing wplistcal folder.