GFIUMARA If you are having trouble like these two, try this:
Show package contents for Acquisition.app (Right click on the icon). Navigate to Contents/MacOS/
In Terminal type "chmod -x " (note the last space) then drag the Acquisition icon from Contents/MacOS/ to the Terminal window (which inserts the path to the file.
Hit enter, close all the windows, and try launching Acquisition.app from the yellow arrow icon again. My guess is it's a permissions problem that has to do with downloading the file rather than the developer. Either that or you do not have the minimum system requirements.
(Version 128.3)