Max gen~ build fails


Building Max gen~ plugin fails following the instructions here:

How to reproduce

  1. Download max-gen-deploy tool at

  2. Run ./

  3. The process fails at
    File "", line 45, in <module> release_process = json.loads( File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/", line 338, in loads return _default_decoder.decode(s) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/", line 366, in decode obj, end = self.raw_decode(s, idx=_w(s, 0).end()) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/", line 384, in raw_decode raise ValueError("No JSON object could be decoded") ValueError: No JSON object could be decoded

Expected/suggested solution

The error states that it can’t decode a JSON object. So maybe the url ( at which the script looks for a JSON file is no longer available. I’m just guessing here. But I would like to hear if there’s something I could do on my end.


macOS 10.13.6

Have you heard back anything on this? I can’t seem to get either the Max Duo package or the method you are trying to work either. I am getting the same errors.

Unfortunately, I haven’t heard back. Would still like a solution to this though.

With the release of the DUO X, we had some changes in our cloud. The official Max package that can be downloaded from the Max package manager has been updated to support these changes. However, this project has not been updated to support these changes yet. We will have a look at this soon.

If you would like to do any of the advanced steps in the meantime, like changing the ttl and (or) add a GUI, the plugin can still be build with the Max package from the package manager. Once the plugin is built and deployed, it should be located on the device in the directory /root/.lv2/ . The ttl information can be adjusted by entering the device with ssh by running ssh root@ (the password is “mod”) and adjusting the information there. Alternatively the plugin can also be copied from the device to your computer by going to the terminal and using the following commands:

$ scp -r root@<plugin-name>.lv2 <local-destination-path>

Now the plugin should be copied to the location that is given at the place of the <local-destination-path> . Once it’s there the changes can be made to the bundle. When the changes are applied the plugin can be deployed to the device again by running:

$ tar cz <plugin-name>.lv2 | base64 | curl -F 'package=@-'

Thanks Bram!

Is there a way to install the Max package without using the Max package manager?
I am running Max using Wine and everything works except for the package manager -_-

Tried locally compiling using the max-gen-skeleton project, but that fails as reported here: Doesn't work with MAX 8.1.8 exports · Issue #2 · moddevices/max-gen-skeleton · GitHub

Btw, the request to results in a 308 Permanent Redirect.

At the moment there’s no way to install the Max package without using the Max package manager.
This possibility got broken and still needs to be fixed.
Sorry for the inconvenience. Keep us posted if you manage to find a workaround.