In Ardour Project Some ZynAddSubFX Instaces Fail To Load With "Warning: Failed To Load Part<>" Message

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In Ardour Project Some ZynAddSubFX Instances Fail to Load with "Warning: Failed to Load Part<>" Message

Ardour, a professional digital audio workstation (DAW), has been a popular choice among audio engineers and musicians for its flexibility and feature-rich interface. However, like any complex software, it's not immune to bugs and issues. In this article, we'll delve into a specific problem encountered by users when working with ZynAddSubFX instances in Ardour 8.12, where some instances fail to load with a "Warning: failed to load part<>" message.

The issue was encountered on the following versions:

  • OS: 64-bit Ubuntu 22.04.5 LTS
  • Version: 3.0.7 development
  • Ardour: 8.12 (official stable build)
  • Commit: 348e8027685a7d9d7949e4096570a5e8076bd857

Note that the issue was also present in earlier versions, including 3.0.6 and 3.0.5, which were compiled with zyn-fusion-build.

The problem occurred when working on a project in Ardour 8.12, where LV2 ZynAddSubFX instances on some tracks refused to restore during loading, displaying only a warning message: Warning: failed to load part<>. The issue was not limited to a single track, as removing the ZynAddSubFX instances and placing them on other tracks did not resolve the problem. However, creating new clean tracks seemed to avoid the issue.

To further isolate the problem, a test project was created with two tracks, where the first track failed to load the ZynAddSubFX instance, while the second track was unaffected. The test project is available for download at zynaddsubfx_issue.zip.

After consulting with the Ardour developers, it was suggested to start troubleshooting from the plugin side. This approach is reasonable, as the issue may be related to the ZynAddSubFX plugin or its interaction with Ardour.

Based on the consultation with Ardour developers, a mitigation strategy was proposed to resolve the issue:

  • Create a new midi track from scratch: This involves creating a new midi track from the beginning, without any plugins or settings.
  • Copy the ZynAddSubFX and other plugins: Once the new midi track is created, copy the ZynAddSubFX and other plugins from the problematic track to the new track.
  • Remove the problematic track: Finally, remove the problematic track, which should resolve the issue.

By following these steps, users can work around the issue and continue using their project without any problems.

The issue of ZynAddSubFX instances failing to load with a "Warning: failed to load part<>" message in Ardour 8.12 is a complex problem that requires a thorough investigation. While the mitigation strategy proposed by Ardour developers can help resolve the issue, it's essential to continue troubleshooting and identifying the root cause of the problem. By working together, the Ard community can ensure that this issue is resolved and that users can continue to enjoy the flexibility and feature-rich interface of Ardour.

As the Ardour development team continues to work on resolving this issue, it's essential to keep in mind the following:

  • Plugin compatibility: The issue may be related to the compatibility of the ZynAddSubFX plugin with Ardour 8.12. Further investigation is needed to determine the root cause of the problem.
  • Ardour development: The Ardour development team should continue to work on resolving this issue, ensuring that users can work seamlessly with ZynAddSubFX instances in their projects.

By following these steps and continuing to work together, the Ardour community can ensure that this issue is resolved, and users can continue to enjoy the flexibility and feature-rich interface of Ardour.
Frequently Asked Questions (FAQs) about ZynAddSubFX Instances Failing to Load in Ardour 8.12

A: The issue is that some ZynAddSubFX instances fail to load with a "Warning: failed to load part<>" message in Ardour 8.12.

A: The issue was encountered on the following versions:

  • OS: 64-bit Ubuntu 22.04.5 LTS
  • Version: 3.0.7 development
  • Ardour: 8.12 (official stable build)
  • Commit: 348e8027685a7d9d7949e4096570a5e8076bd857

A: The mitigation strategy involves creating a new midi track from scratch, copying the ZynAddSubFX and other plugins to the new track, and removing the problematic track.

A: The issue may be related to the interaction between the ZynAddSubFX plugin and Ardour 8.12. Further investigation is needed to determine the root cause of the problem.

A: Yes, a test project is available for download at zynaddsubfx_issue.zip.

A: If you encounter this issue in your project, try the mitigation strategy proposed by Ardour developers. If the issue persists, consider creating a new project and importing your tracks and plugins to see if the issue is resolved.

A: The issue may be specific to ZynAddSubFX instances, but it's possible that other plugins may be affected as well. Further investigation is needed to determine the root cause of the problem.

A: You can contribute to resolving this issue by:

  • Reporting the issue to the Ardour development team
  • Providing more information about the issue, such as the version of Ardour and the plugins used
  • Helping to test and reproduce the issue
  • Contributing to the development of a fix for the issue

A: The Ardour development team is working on resolving this issue, but a fix is not yet available. We recommend keeping an eye on the Ardour development blog and forums for updates on the issue and any potential fixes.