Won't let me save my project, says it's not writable

So I just got this program, and have been trying it out. I can’t save though. It’s kind of annoying since I already did a bunch of work. I go to save, and it says 'C:/folder/Donnysshow.sboard is not writable, You can’t save the project!'Anyone get this ever? I don’t know why the error needs to yell at me that I can’t save. jeeez.

Can you check to see whether the folder where you’re trying to save exists and that it does have permission to write to that folder? I.e. that you’re not trying to write to a read-only folder? That seems to be what that message is saying.

You can also see whether there are any special characters in the path. Try saving in a different folder, just to check.