I got a reply from Tech Support about this. This is what they suggest. Does anyone know if doing the following is going to erase my game progress? I am nervous to try it.

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I recommend that you try clearing your PS4 Game Data Utility files. Doing so will clear any install / update data and DLC content.

Note: All DLC items can be re-downloaded. Exclusive Content is tied to the account and does not need to be re-downloaded.

1. Navigate to your [Settings].
2. Select the content that you want to delete under [Applications] or [Captures], press the Options button and select [Delete].
3. Re-insert the disc and start the game to re-install, or go to your Account --> Download History or the PSN Store to download your game again if you purchased a digital download version of the game.

After doing this, try launching the game again. Please let us know if you have any further issues.