Duplicati crashing on macOS Mojave after upgrade

Support
1 
$ ./duplicati
Crash! 
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Exception: A serious error occurred in Duplicati: System.Exception: Unable to start up, perhaps another process is already running?
Error message: System.InvalidOperationException: object_op ---> System.EntryPointNotFoundException: SystemNative_RealPath
  at (wrapper managed-to-native) Interop+Sys.RealPath(string)
  at System.IO.CoreFX.FileSystemWatcher+RunningInstance.Start () [0x00000] in <e9297c7c5cde4e1285346aced9ff2658>:0 
  at System.IO.CoreFX.FileSystemWatcher.StartRaisingEvents () [0x00067] in <e9297c7c5cde4e1285346aced9ff2658>:0 
  [... continues for about three pages]

Here’s the error I get when I run duplicati duplicati_error.zip (1.8 KB)

I’ve checked in ps and Activity Monitor.app and there’s no instance running, I’ve deleted the lockfiles in ~/.config and the result is the same. duplicati-cli runs successfully so it seems to be related to the server specifically.

My duplicati version is 2.0.4.5_beta_2018-11-28

Possibly related: Freshly installed Duplicati does not seem to be working on macOS Mojave (new user)

2

What version of mono are you running? This sounds related to

3

Yep that was it. That’s annoying.

4

Supposedly there is a fix (at least for the errors we’re seeing with Mono 5.18 on Linux) upstream but it’s not clear when it will be released:

5

It’s alright thanks for the tip!

6

Just for clarification, the issue I linked above is specific to Debian and has been resolved in the latest Debian packages.

7

Does anyone know of a combination of Duplicati and Mono packages that works on an up-to-date macOS machine? I’ve been trying to get it to run completely without success.