Control: notfound -1 2.4.2+dfsg-1 As the backtrace hinted that direction, I yesterday did a local rebuild using libwxgtk3.0-gtk3-dev: This version does NOT segfault.
So I guess there is either a bug in wxwidgets 3.2, or in prusa-slicer which has been exposed with the new wxWidgets. (The version from testing, 2.4.2+dfsg-1, as in the archives, works as well) -- tobi
