Opening Session Freezes Ardour

Hi All.

Just paid for the full version.

Created a test session, froze while recording from internal mic (I may have hit Z key while recording).

Now, I cannot open that session again. Each time I try to open it hangs forever until I “Force Quit” kill it.

Any ideas how to debug this problem?

Works better with a debug version, which you can get from

But first, try resetting your system theme. There are specific themes that trigger a bug in GTK which only affects Ardour.

Try move the instant.xml file in the session-dir out of the way (or delete it).
That file saves previous previous GUI settings and window positions. I hazard a guess the stored zoom-level in there is off (we had similar bug reports in the past).