In reply to Dugg:
Hi Dugg, Just got back from the Argentiere hut about an hour OK.
The easiest way to the hut is still by Grand Montets. There is a fixed rope around the initial bergschrund. No problem.
On descending from there keep to the left of the rognon until it is possible to go right an over a little crest of rock to descend the rubble on the other side to where it joins the "yellow" marked return path just before the main glacier.
Go up the right side, (true left bank) until about 50 to 100m before the level of the hut. Traverse horizontally across the glacier to the moraine, (red poles on the moraine.) Cross the moraine to pick up the path which traverses up to the hut. This way you should avoid all the crevasses.
Expect a very warm welcome and excellent food from Bea and Fred.