As stated, I have Hugin, running Linux Mint and MAcrofusion will start the add photo process but nothing happens when I hit the add buttom.
That is, because some of the libraries macro fusion depends on changed.
To fix it, open the python file
macrofusion.py, go to line 621 and change
Image.frombytes(.... If all the neccesary other libraries are correctly installed, it should work now.