I clicked on Remove Catablog Data and it started removing.
With the progress bar halfway across, it had printed
"20 library items deleted successfully." 10 times and then CataBlog Library Cleared Successfully.
Then an alert box pops up and says
SyntaxError: missing ) after argument list
That stopped the process of removing, I think, because the page doesn't refresh after that. The Library looks empty though, and it has the message at the top:
"CataBlog options and directories have been successfully installed. Please, refresh now"
I looked in the database and there are no catablog-items in the posts table.