Hello Peter,
Thanks for your reply.
I’m using version 0.9.4 (beta) on a Macbook with BigSur.
Further looking on the forum showed me I am not the first with this problem and you replied on it extensively in other questions asked, for example the " Unable to open a Fritzing file on my Mac" question.
I’ve got the same " /Users/robverschuur/Documents/Fritzing/WMI alarmbox.fzz te openen:zip.open(): %d" notification. I’ve tried the 7-zip solution but this doesn’t work either.
Problem occured after installing some parts (IR receiver VS1838B) in the “mine” part section and then saving the file.
With what I have read so far I think I have to do the work again.