Looks like an across the line cap, so that wouldn't have any bearing on voltage to chassis. If one end connected to the chassis, it would be a different story.
Possibly the meter wasn't clicked all the way into the 200v spot? Dunno, looks like its on the right mode and such.
I think I'd be tempted to verify leakage like Fred suggested. If its not excessive, put a grounded cord on it and call it a day. If it has a short from line to chassis, you'd have to figure out what is causing it otherwise it will blow the breakers.
Possibly the meter wasn't clicked all the way into the 200v spot? Dunno, looks like its on the right mode and such.
I think I'd be tempted to verify leakage like Fred suggested. If its not excessive, put a grounded cord on it and call it a day. If it has a short from line to chassis, you'd have to figure out what is causing it otherwise it will blow the breakers.