Two ibles tabs open, and Dead object jams browser Answered
See the screenshot.
The message below (Type error: can't access dead object) appeared in the instructables tab after I accessed a forum topic in another tab.
The pop-up completely jammed my browser - I could not close the pop-up (it popped back up instantly), and I could neither close the tab nor even close the browser through normal routes (corner-X, Alt-F4), all I got was a blink of the screen, a warning tone and the pop-up back.
I had to shut down and start again.