I'm able to create new projects, work, save and build successfully, but I'm now running into issues trying to reopen the existing project.
The error I get points to the .sfproj file, and gives this message (the line number has changed between different projects, but the rest of the message is the same).:
error : Name cannot begin with the '<' character, hexadecimal value 0x3C. Line 413, position 2.
The referenced line looks fine (below), so I'm not sure if the line number is referencing a different file