When I restrted teh Beta, it said it had found two sets of recovery files. These were located in C:\Users\townleyc\AppData\Roaming\PLSQL Developer 13\PLS-Recovery\
So when I accepted, it then failed to open them (just opening titled, empty windows) giving an error message quoting the path to the PSD 12 recovery directory:
Recover file cannot be found!
C:\Users\townleyc\AppData\PLSQL Developer 12\PLS-recovery\852332.002
Chris