I checked out every link you posted but didn´t really understand all info and I thought that uploading a profile image to the current member should be an easy task but now I know that it is advanced stuff. Well, I will also check out your link about mediamanagers. I have a full time work and not with Data/IT or webpages so I don´t have so much space for learning about coding. Thats the main reason to why I have not become much cleverer after a year of clumsy tryings but I have learned the basics pretty well by now and my webpage is almost finished. This image problem and a “rent out videos” setup are the only things left to solve.
By now I have probably checked out 65 pages about uploading images but not a single guy has been able to give a clear explanation.