Pentax ME Super 35mm SLR Camera "magnet group" Questions

Shutter problems? I went to my photo lab at school to develope my film and when i went to see the negatives there were some frames where there was no picture at all. It looked like this "picture, ...

i have a pentax me super, film camera. i've been using it recently and it has been working fine, suddenly today the light senor stopped working. it still lights up when you half press the button just ...