After not having much success with re-installing Fritzing I asked my son
for help.
He had recently uninstalled Windows & installed Ubuntu Linux on my computer
and I am still not used to the Linux operating system.
He had it all fixed in a few minutes by using some apt-get commands.
I have now used Fritzing and re-created my PCB circuit layout quite easily.
I have run a Circuit check with no errors in the PCB.
I am printing it out using a Brother HL2270 DW laser printer on plain paper
to test the quality, but my printout is not dark enough.
I will be using the iron-on method for making the board.
There seem to be a few different printing options for printouts in Fritzing.
I presume "Export as an Etchable PDF" should be used for etching and this
gave me what appeared to be good except not dark enough.
Doing test prints however using the different options available eg.
export as a PDF, JPG, PDF, Export for Production I notice that in the full
A4 page printouts that here are some that show tracks not meeting the
circle of the component despite the No Errors Circuit check.
I await your valuable comments.
Thanks
Regards
Syd