Help with a block operation

[Rsslone]

"Either 'block' or 'blocks' has to be defined on each area"
https://i.imgur.com/qgV7aYY.png
What does this mean, and what am I doing wrong?

[Valandur]

Sorry for the late reply, that seems to be a bug on my end. I'll try and fix this for the next release!

[Rsslone]

Appreciate it. This tool is very useful for removing bugged out blocks that cause client crashes!