8.6.170 crashing on punch-in

hi
im trying to create a bug report for the following problem:
Adding a punch in/out to the range ruler, then pressing 8 to activate punch in/out crashes ardour.
This happens in new sessions with no plugins
I opened a terminal to run a debug session and arrowed up to an existing command, then edited the ardour version number (which was previously something like 8.1.101)
This was the output:
$ sh /opt/Ardour-8.6.170-dbg/bin/ardour8 --gdb
GNU gdb (Debian 10.1-1.7) 10.1.90.20210103-git
Copyright (C) 2021 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type “show copying” and “show warranty” for details.
This GDB was configured as “x86_64-linux-gnu”.
Type “show configuration” for configuration details.
For bug reporting instructions, please see:
https://www.gnu.org/software/gdb/bugs/.
Find the GDB manual and other documentation resources online at:
http://www.gnu.org/software/gdb/documentation/.

For help, type “help”.
Type “apropos word” to search for commands related to “word”…
Reading symbols from env…
(No debugging symbols found in env)
Signal Stop Print Pass to program Description
SIG32 No No Yes Real-time event 32
(gdb)

What does this mean and how to rectify it?
Many thanks
PS Ardour 8 has been great for me, Ive hardly had any problems for a while.

You’ve landed at the debugger prompt. Type run and hit Enter, recreate your crash, and type bt into the debugger prompt. This should (hopefully) give you a stacktrace that can be used to debug the issue.

Now type run , press enter, and get Ardour to crash. and then produce a backtrace thread apply all bt

see https://ardour.org/debugging_ardour

Many thanks for the helpful advice :grinning: