Why do the Warning Console message popup

I've installed an app from App Store, run it and found not quite what I wanted, then put it in the bin. Searched my MAC again for the application, saw 3 folders with Crash word and the application name associated with it, put all into BIN.

Then I noticed the Warning Console messages icon on the Dock, so I clicked on it found thousands and thousands of messages kept going, non-stop. I shut down and restarted, the Warning Console messages still there, which I removed from the Dock again, and rebooted.

Any possibility my machine being hacked?