diff --git a/src/slic3r/GUI/Tab.cpp b/src/slic3r/GUI/Tab.cpp
index 23bdfe554b..040878a11a 100644
--- a/src/slic3r/GUI/Tab.cpp
+++ b/src/slic3r/GUI/Tab.cpp
@@ -1069,17 +1069,21 @@ void Tab::on_roll_back_value(const bool to_sys /*= true*/)
                 to_sys ? group->back_to_sys_value("compatible_printers") : group->back_to_initial_value("compatible_printers");
                 load_key_value("compatible_printers", true/*some value*/, true);
 
-                bool is_empty = m_config->option<ConfigOptionStrings>("compatible_printers")->values.empty();
-                m_compatible_printers.checkbox->SetValue(is_empty);
-                is_empty ? m_compatible_printers.btn->Disable() : m_compatible_printers.btn->Enable();
+                if (m_compatible_printers.checkbox) {
+                    bool is_empty = m_config->option<ConfigOptionStrings>("compatible_printers")->values.empty();
+                    m_compatible_printers.checkbox->SetValue(is_empty);
+                    is_empty ? m_compatible_printers.btn->Disable() : m_compatible_printers.btn->Enable();
+                }
             }
             if ((m_type == Preset::TYPE_FILAMENT || m_type == Preset::TYPE_SLA_MATERIAL) && (m_options_list["compatible_prints"] & os) == 0) {
                 to_sys ? group->back_to_sys_value("compatible_prints") : group->back_to_initial_value("compatible_prints");
                 load_key_value("compatible_prints", true/*some value*/, true);
 
-                bool is_empty = m_config->option<ConfigOptionStrings>("compatible_prints")->values.empty();
-                m_compatible_prints.checkbox->SetValue(is_empty);
-                is_empty ? m_compatible_prints.btn->Disable() : m_compatible_prints.btn->Enable();
+                if (m_compatible_prints.checkbox) {
+                    bool is_empty = m_config->option<ConfigOptionStrings>("compatible_prints")->values.empty();
+                    m_compatible_prints.checkbox->SetValue(is_empty);
+                    is_empty ? m_compatible_prints.btn->Disable() : m_compatible_prints.btn->Enable();
+                }
             }
         }
         for (const auto &kvp : group->opt_map()) {
@@ -4186,7 +4190,9 @@ if (is_marlin_flavor)
             // optgroup->get_value() return int for def.type == coInt,
             // Thus, there should be boost::any_cast<int> !
             // Otherwise, boost::any_cast<size_t> causes an "unhandled unknown exception"
-            size_t extruders_count = size_t(boost::any_cast<int>(optgroup_sh->get_value("extruders_count")));
+            const auto v = optgroup_sh->get_value("extruders_count");
+            if (v.empty()) return;
+            size_t extruders_count = size_t(boost::any_cast<int>(v));
             wxTheApp->CallAfter([this, opt_key, value, extruders_count]() {
                 if (opt_key == "extruders_count" || opt_key == "single_extruder_multi_material") {
                     extruders_count_changed(extruders_count);