Check that the flexi- waste pipe is properly inserted into the house, waste water pipe. If okay, the machine may have a split in the rubber door seal but this would leak when doing a wash also, check it anyway even though it's unlikely.
There could be a split in the flex-pipe I mentioned, this can happen if it gets trapped and is nipped when pushing the machine against the wall.
Take the flex-pipe out of the drain, put it out the door or into a sink, empty some water into the machine and turn on to "Spin". Watch as the machine empties and check the pipe for leaks.
Try these before calling out the engineer.
Davy Mac, October 2009