(a) when switching to another main menu tab Program received signal SIGSEGV, Segmentation fault. 0x00007ffff474133e in __dynamic_cast () from /usr/lib/gcc/x86_64-pc-linux-gnu/4.6.3/libstdc++.so.6 (gdb) bt #0 0x00007ffff474133e in __dynamic_cast () from /usr/lib/gcc/x86_64-pc-linux-gnu/4.6.3/libstdc++.so.6 #1 0x000000000084a4b0 in GUIFormSpecMenu::acceptInput (this=0xf162c0, eventtype=-1) at /home/kahrl/minetest/src/guiFormSpecMenu.cpp:1914 #2 0x000000000084c1d4 in GUIFormSpecMenu::OnEvent (this=0xf162c0, event=...) at /home/kahrl/minetest/src/guiFormSpecMenu.cpp:2274 #3 0x00007ffff78bf8bd in irr::gui::CGUITabControl::setActiveTab(int) () from /usr/lib64/libIrrlicht.so.1.8 #4 0x00007ffff78c382b in irr::gui::CGUITabControl::OnEvent(irr::SEvent const&) () from /usr/lib64/libIrrlicht.so.1.8 #5 0x00007ffff788a5f9 in irr::gui::CGUIEnvironment::postEventFromUser(irr::SEvent const&) () from /usr/lib64/libIrrlicht.so.1.8 #6 0x00007ffff78634b4 in irr::CIrrDeviceStub::postEventFromUser(irr::SEvent const&) () from /usr/lib64/libIrrlicht.so.1.8 #7 0x00007ffff7858884 in irr::CIrrDeviceLinux::run() () from /usr/lib64/libIrrlicht.so.1.8 #8 0x00000000008aefbb in GUIEngine::run (this=0xf0db30) at /home/kahrl/minetest/src/guiEngine.cpp:222 #9 0x00000000008ae911 in GUIEngine::GUIEngine (this=0xf0db30, dev=0xc87920, parent=0xea2020, menumgr=0xc710a0 , smgr=0xee0bb0, data=0x7fffffffc090) at /home/kahrl/minetest/src/guiEngine.cpp:185 #10 0x00000000008a568b in main (argc=2, argv=0x7fffffffdc38) at /home/kahrl/minetest/src/main.cpp:1605 (b) when clicking the Enable Damage or Creative Mode checkbox Program received signal SIGSEGV, Segmentation fault. 0x00007ffff474133e in __dynamic_cast () from /usr/lib/gcc/x86_64-pc-linux-gnu/4.6.3/libstdc++.so.6 (gdb) bt #0 0x00007ffff474133e in __dynamic_cast () from /usr/lib/gcc/x86_64-pc-linux-gnu/4.6.3/libstdc++.so.6 #1 0x000000000084a657 in GUIFormSpecMenu::acceptInput (this=0xf162c0, eventtype=-1) at /home/kahrl/minetest/src/guiFormSpecMenu.cpp:1924 #2 0x000000000084c4cd in GUIFormSpecMenu::OnEvent (this=0xf162c0, event=...) at /home/kahrl/minetest/src/guiFormSpecMenu.cpp:2318 #3 0x00007ffff786c5fd in irr::gui::CGUICheckBox::OnEvent(irr::SEvent const&) () from /usr/lib64/libIrrlicht.so.1.8 #4 0x00007ffff788a5f9 in irr::gui::CGUIEnvironment::postEventFromUser(irr::SEvent const&) () from /usr/lib64/libIrrlicht.so.1.8 #5 0x00007ffff78634b4 in irr::CIrrDeviceStub::postEventFromUser(irr::SEvent const&) () from /usr/lib64/libIrrlicht.so.1.8 #6 0x00007ffff7858884 in irr::CIrrDeviceLinux::run() () from /usr/lib64/libIrrlicht.so.1.8 #7 0x00000000008aefbb in GUIEngine::run (this=0xf0db30) at /home/kahrl/minetest/src/guiEngine.cpp:222 #8 0x00000000008ae911 in GUIEngine::GUIEngine (this=0xf0db30, dev=0xc87920, parent=0xea2020, menumgr=0xc710a0 , smgr=0xee0bb0, data=0x7fffffffc090) at /home/kahrl/minetest/src/guiEngine.cpp:185 #9 0x00000000008a568b in main (argc=2, argv=0x7fffffffdc38) at /home/kahrl/minetest/src/main.cpp:1605 (c) in-game when opening the pause menu or inventory Program received signal SIGSEGV, Segmentation fault. 0x00000000008ca171 in luaS_newlstr (L=0xf0db38, str=0x97c4e7 "engine", l=6) at /home/kahrl/minetest/src/lua/src/lstring.c:82 82 for (o = G(L)->strt.hash[lmod(h, G(L)->strt.size)]; (gdb) bt #0 0x00000000008ca171 in luaS_newlstr (L=0xf0db38, str=0x97c4e7 "engine", l=6) at /home/kahrl/minetest/src/lua/src/lstring.c:82 #1 0x00000000008b833c in lua_getfield (L=0xf0db38, idx=-10002, k=0x97c4e7 "engine") at /home/kahrl/minetest/src/lua/src/lapi.c:550 #2 0x00000000008af014 in GUIEngine::handleEvent (this=0xf0db20, text= "MenuQuit") at /home/kahrl/minetest/src/guiEngine.cpp:250 #3 0x00000000008addd1 in TextDestGuiEngine::gotText (this=0xea0c80, text= L"MenuQuit") at /home/kahrl/minetest/src/guiEngine.cpp:69 #4 0x000000000084ade3 in GUIFormSpecMenu::OnEvent (this=0xf162c0, event=...) at /home/kahrl/minetest/src/guiFormSpecMenu.cpp:1959 #5 0x00007ffff788a53f in irr::gui::CGUIEnvironment::postEventFromUser(irr::SEvent const&) () from /usr/lib64/libIrrlicht.so.1.8 #6 0x00007ffff78634b4 in irr::CIrrDeviceStub::postEventFromUser(irr::SEvent const&) () from /usr/lib64/libIrrlicht.so.1.8 #7 0x00007ffff7858404 in irr::CIrrDeviceLinux::run() () from /usr/lib64/libIrrlicht.so.1.8 #8 0x000000000088a37f in the_game (kill=@0xc6fc18: false, random_input=false, input=0xee38c0, device=0xc87920, font=0xee3750, map_dir= "/home/kahrl/minetest/bin/../worlds/deptest", playername="singleplayer", password="", address="", port=30011, error_message=L"", configpath= "/home/kahrl/minetest/bin/../minetest.conf", chat_backend=..., gamespec=..., simple_singleplayer_mode=true) at /home/kahrl/minetest/src/game.cpp:1400 ---Type to continue, or q to quit--- #9 0x00000000008a6458 in main (argc=2, argv=0x7fffffffdc38) at /home/kahrl/minetest/src/main.cpp:1735