The ME Super has a basic K-mount. What I would do is test the connection between the lens and light meter. Take the lens off the camera and look at the mount. On the upper right side, there's a spring loaded tab that moves down in an arc. That tab follows the position of the lens's aperture ring and tells the light meter where it's set. You can look through the viewfinder with no lens on, activate the light meter by pressing on the shutter button, and move the tab down. The light meter should change. If it doesn't, the variable resistor that the tab connects to is not working, or the ambient light is too bright and the meter is pegged. Try setting the ASA dial to its lowest number and doing it again.
Any K-mount lens with an aperture ring should be capable of moving that lever. You can look at your lenses and see something like this:
The arc slot at the bottom has its own tab that moves the camera's tab. You should be able to move the aperture ring and see that tab follow along. There might be something wrong with the Adaptall installation but the Sakar sounds like it should work. The Adaptall PK-A adapters wouldn't do anything extra for you with this camera. If there's no tab or it doesn't move when the aperture ring moves, the lenses have problems. I suppose a lens with a stuck aperture might act like this.
The M42 lenses will work with adapters. The adapter will shove the camera's metering tab all the way down when you install it. The camera can't read the aperture ring position on M42 lenses. To use the camera's meter, you have to set the lens's Manual-Auto (or M-A) switch to Manual, then set the aperture ring on the lens. The meter reading should change as you move the ring.