I just noticed the time of the incident and realized that it's that bit more concerning as it was after last light. Probably be the usual story of someone with the wrong comm selected but I wonder if the C172 had all the lights on. I wouldn't be chancing a night landing on an obviously occupied strip, but would likewise hope that I'd not taxi in the path of a properly lit aircraft on short final. However, as someone has mentioned, if the Dash 8 was lining up on the reciprocal runway, the hump could conceivably have obscured a C172 on very short final. Don't know the Toowoomba strip but the hump effect is a trap at other places (like 04/22 at Parkes), at least for aircraft actually on the ground.