#### Summary: Since commit https://gitlab.com/inkscape/inkscape/-/commit/435abd882feb12d4b357f4e06caff83ab39f287f or https://gitlab.com/inkscape/inkscape/-/commit/8e4fb75d9092a4fe42555de420833b9bce696a89 Inkscape master doesn't start. #### Steps to reproduce: - open Inkscape #### What happened? ``` ** (org.inkscape.Inkscape:2241947): ERROR **: 12:23:47.962: unhandled exception (type std::exception) in signal handler: what: invalid matrix (not invertible) Trace/breakpoint trap (core dumped) ``` If the config files are deleted, the Welcome dialog shows up, but opening a document or starting with a blank file gives an exception. #### What should have happened? Opening the main Inkscape window. Sample attachments: [_usr_bin_inkscape.1000.crash](/uploads/e615f213cc71084d9c5eb1598a7a66bc/_usr_bin_inkscape.1000.crash) #### Version info ``` Inkscape 1.5-dev (1:1.5.0+202508290150+70f9b1c180) Compile (Run) GLib version: 2.85.3 GTK version: 4.18.5 (4.18.5) glibmm version: 2.84.0 gtkmm version: 4.18.0 libxml2 version: 2.14.5 libxslt version: 1.1.43 Cairo version: 1.18.4 (1.18.4) Pango version: 1.56.3 (1.56.3) HarfBuzz version: 10.2.0 (10.2.0) Poppler version: 25.03.0 OS version: Ubuntu Questing Quokka (development branch) ```