VCV Rack crashes after loading and playing with patch

VCV Rack
1

I didnt have any crashes for a long time, but today after a big module update VCV Rack crashes. Therefore i think, that one of the updated modules are buggy. How can i find out which one it is? I cant see anything in the log.txt. For me the last lines show, that Rack crashes, but not which module.

Any help for further investigation.

Thanks

Karl

here is the log.txt.

log_crashed.txt (195.4 KB)

perhaps this file is important, too. I dont know.

settings.json (49.4 KB)

I am on Linux ubuntu 24.04.

Newest VCV Rack.

After some unsuccessfully restarts the last lines show this:

But i doubt that Rack has a problem.

[15.049 info src/patch.cpp:239 saveAutosave] Saving autosave /home/held/.local/share/Rack2/autosave/patch.json [15.080 fatal adapters/standalone.cpp:49 fatalSignalHandler] Fatal signal 11. Stack trace: /home/held/Downloads/Rack2Free/Rack: ?? +0x40494d /lib/x86_64-linux-gnu/libc.so.6: ?? +0x77a45330 ./libRack.so: hashtable_iter_next +0x0 ./libRack.so: ?? +0x782ff750 ./libRack.so: ?? +0x782ff8af ./libRack.so: ?? +0x782ff7b7 ./libRack.so: ?? +0x782ff8af ./libRack.so: ?? +0x782ff7b7 ./libRack.so: ?? +0x782ff7b7 ./libRack.so: ?? +0x782ff8af ./libRack.so: ?? +0x782ff7b7 ./libRack.so: json_dump_callback +0x49 ./libRack.so: rack::patch::Manager::saveAutosave() +0x14c ./libRack.so: rack::app::Scene::step() +0x1ee ./libRack.so: rack::window::window::step() +0x5a9 ./libRack.so: rack::window::window::run() +0x28 /home/held/Downloads/Rack2Free/Rack: main +0xa00 /lib/x86_64-linux-gnu/libc.so.6: ?? +0x77a2a1ca /lib/x86_64-linux-gnu/libc.so.6: __libc_start_main +0x8b /home/held/Downloads/Rack2Free/Rack: ?? +0x4047a9

2

Yes, the crash dump does not give much helpful information. The only approach I can think of is deleting one plugin after another until the crashes stop.

3

Unfortenately… I compared two versions of the crashing patch and see, that one version is ok, the other crashes. One difference i could see, is in the crashing patch i use two expander for 8Face MK2. But i use these modules for a longer time and nothing happens.

4

this i the patch, that works:

Ciani Patch TouchOSC 044a.vcv (62.6 KB)

and this one crashes:

Ciani Patch TouchOSC 044.vcv (64.1 KB)

unfortunately i cant investigate the whole patch, because it crashes. is there any other way?

5

Hm, I see only one change I did, which could be responsible. I will check when I get home.

6

Thank you.

7

Yes, unfortunately confirmed, what a shame. I will request an update in VCV Library in a minute. In the meantime you can download it manually.

I’m really sorry about that :cry:

1 Like
8

Hello, just tested my crashing patch. Now it works again. Thank you for the quick fix.

Karl

2 Likes