Unexpected Error | Please Help

Hello there,

I created this account, because I got a problem with the Software.

I installed the desktop app and I tried to link my “old” safe.

So the program said, that I need to update the safe to a new format.

I clicked the checkbox and hit next, but then this error occured:


at java.base/java.util.Optional.orElseThrow(Unknown Source)
at org.cryptomator.cryptofs.migration.Migrators.migrate(Migrators.java:111)
at org.cryptomator.ui.migration.MigrationRunController.lambda$migrate$2(MigrationRunController.java:117)
at org.cryptomator.ui.common.Tasks$TaskImpl.call(Tasks.java:140)
at javafx.concurrent.Task$TaskCallable.call(Task.java:1425)
at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.base/java.lang.Thread.run(Unknown Source)

Does someone know this error?

OS: Windows 10 Pro 64bit
Software Version: 1.5.16

I would be very happy about any help.

Kind regards

Hi. Can you please have a look into the masterkey file and name the vault version of your vault.
If you want to upgrade from a very old version, you have to do some additional steps.


Thanks for the quick help, it just works now!