I've downloaded the AutopanoVideo_Mac_151_2014-04-23.dmg demo installaller. When I try to mount/open the installer by clicking it I get a warning dialogue (The following disk images could not be opened. Reason: Not Recognized).
Macbook Pro 2.4Ghz Intel Core i5 I've tried this on OSX 10.7.5, Mavericks and Snow Leopard (have three separate bootable partitions).
I have updated security settings to allow all developer apps and other .dmg files are working fine.
ALSO I am getting the same problem with the Kolor Eyes Player (KolorEyes_Mac_110_2014-03-03.dmg)