Hi Peter,
Thank you for your extensive info.
I installed Linux Mint 19.2 (with latest updates) in a virtual machine. I unzipped Fritzing to the ~/bin diretcory.
erik@mint19-vm01:~/bin/fritzing-0.94$ ./Fritzing
/home/erik/bin/fritzing-0.94/lib/Fritzing: error while loading shared libraries: libQt5PrintSupport.so.5: cannot open shared object file: No such file or directory
erik@mint19-vm01:~/bin/fritzing-0.94$ qmake --version
Command 'qmake' not found, but can be installed with:
sudo apt install qtchooser
erik@mint19-vm01:~/bin/fritzing-0.94$
It seems that QT isn’t even installed in a fresh and up to date version of Linux Mint 19.2.
The QT version on my laptop is:
erik@laptop-erik:~$ qmake --version
QMake version 2.01a
Using Qt version 4.8.7 in /usr/lib/x86_64-linux-gnu
erik@laptop-erik:~$
Althoug QT5 seems to be installed:
erik@laptop-erik:/usr/lib/x86_64-linux-gnu$ qtchooser -l
4
5
default
qt4-x86_64-linux-gnu
qt4
qt5-x86_64-linux-gnu
qt5
erik@laptop-erik:/usr/lib/x86_64-linux-gnu$
I begin to have the idea that my problems are due to dependency problems or even the absence of QT.
Erik