Freeze Plugin and unable to Save As in Ardour with Potential Fix

[kenzel]

So i used Freeze plugin which is terrific btw.

Freeze, an LV2 plugin for freezing audio or midi tracks in Ardour

Freeze Version 0.2.1 Freeze is an LV2 plugin for freezing tracks in a digital audio workstation—that is, temporarily rendering a track as audio to reduce CPU/DSP load, as tracks with large chains of CPU-heavy effects can make buffer underruns (xruns) quite common. Some DAWs like Ardour support track freezing to a certain extent, but Ardour, for example, cannot freeze MIDI tracks. [Screenshot of Freeze in Ardour] Freeze running in Ardour Usage To use Freeze, insert an instance of the plugin…

There is a bug which is likely an Ardour needed fix because I believe that the Freeze plugin is keeping skeletons in the session that are not being removed by Ardour when the plugin is removed.

To replicate:
I made a track template with Freeze as a listed plugin and then started and recorded a session with the same Track Template with Freeze. Later I deleted the plugin. Running Lua Script “Show Plugin” shows that there is no existence of Freeze plugin.
Problem: Save works but Save As does not work. It provides the following error:

Save As failed: (Where XXXXXX is name of session)
copying “XXXXXX/plugins/743649/state27/FreezeDB” failed !"

To fix:

1. So I duplicated the folder (in case I screwed anything up), then went into Ardour session folder and found the 743649 folder and deleted it.
2. I received a few more of these Failed messages and deleted the appropriate folders under plugins until the Save As error referred to a FreezeDb in externals folder.
3. I went to externals folder and deleted the FreezeDb file.

Ardour now allows me to Save As under a new file name.

Can someone confirm that the above brute force methodology is not screwing up the session by doing this?

[werner.back]

I expierience that with any LV2 plugin which has external references (e.g. samplers, convolution etc.). LV2 uses symlinks which obviosly break sometimes. I always thought this was because I use Nextcloud for manging my projects, which can’t handle symlinks.