Encrypted Folder Showing as 0Kb file after Upgrade

I was running version 1.33 and discovered that 1.54 was available. After upgrading and mounting the encrypted vault, the folder inside my vault where I store files is now no longer accessible. When mounted and opening the drive letter assigned, I see a text file that I had in the root which I can open, but then I had a folder in the root that is now showing as a “file” type and not a “folder”. Double-clicking on the file it asked me how do I want to open it. I created a folder in the vault and locked and re-open and that new folder is accessible. Any idea what might have happened and how to recover my folder with all of my encrypted files? Thank you!