ESR crashed about 4:45. The magnets dumped and we eventually moved them all to warm return. LQ1 developed a plume on the right lead. We closed the supply valves and warmed the fitting until it sealed. The left Q1 will remain on warm return, and all He supply valves will remain closed until tomorrow. We will investigate further in the AM. ESR is now back online. The Q2's, Q3's and D1's have begun to fill and we are in the process of returning them to cold return. The right Q1 was warm when the trip occurred (170K), so it will not be ready for cold return until sometime tomorrow afternoon.