I’ve left it way longer than 60s now and it appears to have got stuck after turning on the battery. The engine dials are showing 3.0, 17 and 25.0, top to bottom, for each of the engines, with no sign of any movement elsewhere in the cockpit.
As it works for you, i am guessing that i must have something else in my community folder that is tripping it up, so I’ll empty everything else out and give it another try. It’s all part of the fun. 