I am working on a new sketch and needed to review an older one but was unable to open several of my past sketches. I first get the "Unable to open sketch" error message. I was getting that a couple of weeks ago but found on the forum that I need to delete the "preferences" file, while I don't have a sketch open, then open a sketch. That worked and I have not gotten the message again until this morning.
After I click Ok on that message I get another one that says it failed to open that sketch and it shows the path to the folder.
I also noticed in Windows Explorer that some of the sketch folders are showing faded, the other folders are a solid color. The ones that are faded I can't open the sketch, I can go into the folder and see the sketch file that is in there. I even copied one of the files, created a new folder, pasted that one in, renamed it to match the folder and it still wont open. The sketches in the solid color folder I can open no problem. Also tried rebooting my computer.
What's going on?
Thanks
John