[Needs Verification] Cubase 15 + MetaGrid Pro Selected Channel not persisting / plugin list not loading (Windows 10)

Support & Troubleshooting Cubase
1

Hello,

I am trying to set up MetaGrid Pro with Cubase 15 on Windows 10, but I have encountered a problem with the Selected Channel integration.

My setup:

  • Windows 10 PC
  • Cubase Pro 15 (latest version)
  • iPad Pro running MetaGrid Pro
  • MetaServer running on Windows
  • loopMIDI used for virtual MIDI ports

The problem:

After adding Selected Channel in Cubase MIDI Remote Manager, it appears to load correctly. The device shows as connected.

However:

  1. After closing and reopening Cubase, the Selected Channel device disappears from MIDI Remote Manager.

  2. The Selected Channel interface inside Cubase shows many functions, but they appear inactive/disconnected.

  3. On the iPad side, MetaGrid Pro does not show the Cubase plugin list.

  4. The plugin page previously showed:

    “Couldn’t load plugins - timeout”

Things I have already checked:

  • MetaServer is running correctly.
  • MetaServer shows green check marks for the integrations.
  • Cubase MIDI Remote Manager can detect Selected Channel.
  • Selected Channel has been added successfully.
  • MIDI input/output names were configured according to the MetaGrid instructions.
  • Commands and Selected Channel were tested separately.
  • There are currently no JavaScript errors in Cubase MIDI Remote Console.

Previously I had a script error:

TypeError: undefined not callable
(property 'accessSlotAtindex' of [object Object])

but this error no longer appears after reinstalling/reconfiguring.

My current suspicion:

The biggest issue may not be the iPad connection itself, but that Cubase is not saving/persisting the Selected Channel MIDI Remote device.

Because every time Cubase restarts, Selected Channel disappears, it seems the integration is not being permanently registered.

I am also going to test with an original Apple USB cable for the iPad connection, although I understand MetaGrid Pro normally communicates through MetaServer/network rather than direct USB MIDI.

Could anyone advise:

  1. Is Selected Channel supposed to remain permanently in Cubase MIDI Remote Manager after restarting Cubase?
  2. Is there any additional installation step required for Cubase 15 on Windows?
  3. Is there a specific file/location where the MIDI Remote device registration is stored?
  4. Are there known compatibility issues with Cubase 15 + Windows 10?

Thank you very much for any help.

2

Hi Wayne,

Can you please update to MetaGrid Pro 1.7.3 and MetaServer 6.0.3 and see if it solved your issues?

3

We have fixed several Windows issues affecting the Cubase Selected Channel integration and plugin-list loading in MetaServer 6.0.3, including the plugin-list timeout and MIDI Remote response handling.

Please update to MetaGrid Pro 1.7.3 and MetaServer Windows 6.0.3, restart Cubase, and check whether Selected Channel remains registered and the plugin list loads correctly.

I will keep this thread under verification until we confirm both behaviors. If Selected Channel still disappears after restarting Cubase, please let me know and we will track that persistence issue separately.