Add me to the chorus of folks with this issue. This has now happened before and after the update with separate created presets. Standalone Scaler 3 crashes when I try to load it, and the entire Ableton project becomes unusable, giving a “serious program error” message (attached) when I open it.
I’m attaching the most recent preset and error report, and a screenshot of the Ableton error message. Ableton Crash Report 2025-07-08 225602 Live 12.2.1.zip (1.8 MB)
Ableton Crash Report 2025-07-08 225937 Live 12.2.1.zip (2.7 MB)
After SW Chords.s3p.zip (43.8 KB)
I’ve also made a folder with the Ableton project in question, and a “safe” version pulled from the backup earlier that day for reference on what else is loaded in the project. I also put a previous occurrence of this issue in the folder, but don’t have those project files to attach because I deleted them before pinpointing this as the issue.
My system is a MacBook Pro M3 with 64GB running Sequoia 15.5, and my Ableton is 12.2.1, with the most recent update of Scaler 3
I hopefully don’t have to spell out why taking out a whole project is a pretty huge concern, but it’s making me hesitant to use Scaler 3 at all, and I love the program!