Hi,
Current Directory version 1.4.15 is … c:\Cryptomator-Data-Local
I created a backup of this origional data into c:\Cryptomator-Data-Local-v1.5.0
Changed also masterkey.cryptomator into masterkey.v1.4.15.cryptomator
Add Vault, Open Excisting Vault , select masterkey.v1.4.15.cryptomator in C:\Cryptomator-Data-Local-v1.5.0
directory.
java.nio.file.NoSuchFileException: C:\Data\NewCryptoVault-v1.15.0: Not a vault directory
Error … Not a vault directory
Created new vault in NewCryptoVault-v1.15.0 -> Working ??
Changed masterkey.v1.4.15.cryptomator into masterkey.cryptomator -> Problem solved !!!
Conclusion:
You are NOT allowed to change the name of the cryptomator masterkey