From 7ada04ff1a7778ce9bd4ad841af3f0779b0ac350 Mon Sep 17 00:00:00 2001
From: "zhimin.zeng" <zhimin.zeng@bambulab.com>
Date: Tue, 26 Sep 2023 19:30:17 +0800
Subject: [PATCH] FIX: Add protection for cali (for crash)

Jira: 4434
Change-Id: I2b82c68b81dd0c65fe2188ad6824f5f2dda4c8a6
---
 src/slic3r/GUI/CalibrationWizardPresetPage.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/slic3r/GUI/CalibrationWizardPresetPage.cpp b/src/slic3r/GUI/CalibrationWizardPresetPage.cpp
index 8ae078b6b9..8cc156c849 100644
--- a/src/slic3r/GUI/CalibrationWizardPresetPage.cpp
+++ b/src/slic3r/GUI/CalibrationWizardPresetPage.cpp
@@ -1139,6 +1139,9 @@ void CalibrationPresetPage::update_combobox_filaments(MachineObject* obj)
 {
     if (!obj) return;
 
+    if (!obj->is_info_ready())
+        return;
+
     //step 1: update combobox filament list
     float nozzle_value = get_nozzle_value();
     obj->cali_selected_nozzle_dia = nozzle_value;