Use some diesel additive to prevent gelling. I don't know if Power Service products are available in your area, but they have an additive that will literally ungell, gelled fuel. If you'regoing to be doing errands let the car idle.
1994 MB E320 Coupe (199,500 mi)
1992 MB 190E 2.6 (173,000 mi)
1983 Porsche 911SC (148,000 mi)
2004 Volvo V70 2.5T (198,000 mi)
President of CT/Westchester Section