It finally works for me. I had somehow missed that PoE writes it save files to a location I didn't anticipate considering my other steam games writes to other locations. So now I did as you said. I deleted the whole folder of save files and now I can save and load again... For now atleast.
My other games writes to C:\Users\Username\Documents\ but by chance I stumbled upon a folder containing the save files in C:\Users\Username\Saved Games.
So after I found this folder it was as easy as follow the steps you described in your latest post and now I can save and load again.
