True, and I didn't make my comment clear - my successful test of LV mode after the firmware upgrade to v1.10 was with a K lens, so I think it applies to the OP. Unfortunately I don't know what happens with v1.00 as I wasn't aware of this problem prior to updating.

Can't speak as to an A lens, I don't own one...

Cheers

Jonathan

Hi folks

just spotted this thread and I don't (always) have the same problem. However...
(a) I've just updated the firmware to 1.10
(b) I noticed a similar problem in viewfinder mode when using painted extension tubes which didn't short the contacts - this seems to have fooled the body into failing to spot the manual lens, and it didn't stop down when I pressed the green button

Can't imagine (b) applies to an A lens, but the firmware update may be worth a try; I note that it includes "Improved stability for general performance" which I take to mean "fixed a few embarrassing bugs we'd rather not admit to"...

Cheers

Jonathan