Hopefully this had not been mentioned before, but didn't find something about this: Tested under Windows 10 and OSX 10.14 and 10.15 and pd 50.02
If a patch is edited it witha second Display attached and this is missing later on and the patch contains negative coordinates like: #N canvas -1374 447 879 555 10; pd crashes on osx and the file does not open on windows 10 (at least not my and my students machines) If we edit it to something existing like #N canvas 50 50 879 555 10; it works fine. Don’t know if this is a tkl/tk or pd problem ?
best Seppo
Be green keep it on the screen! Josef (Seppo) Gruendler