Things to try
1 - open an older, autosave version of the project
2 - create a new project and import the old project into the new
1. Tried opening an older version but teh sequences that I needed were not there.
2. Also tried importing the project, but the sequences that I needed aren't imported.
Can you create a new sequence in the problem project?
I can create a new sequence but can't view footage.
Can't view it in the problem sequence? Can't view it clips in the Source Monitor? Can't bring in new clips and see those? Can't add clips to the new sequence?