From 8fc53b4312f6682188ebb76a640d928b95e1f680 Mon Sep 17 00:00:00 2001
From: "weiting.ji" <weiting.ji@bambulab.com>
Date: Wed, 16 Jul 2025 18:49:40 +0800
Subject: [PATCH] FIX: Client crash when opening 3mf file of older version

Jira: STUDIO-13381
Change-Id: I9065c215758d035cd6de3cc11519285663046bfb
(cherry picked from commit d73756c59729e5525b013d989c154678cf344fee)
---
 src/slic3r/GUI/wxExtensions.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/slic3r/GUI/wxExtensions.cpp b/src/slic3r/GUI/wxExtensions.cpp
index 1ce8d258b2..33f557225c 100644
--- a/src/slic3r/GUI/wxExtensions.cpp
+++ b/src/slic3r/GUI/wxExtensions.cpp
@@ -612,6 +612,9 @@ wxBitmap *get_extruder_color_icon(std::vector<std::string> colors, bool is_gradi
         for (const auto& color_str : colors) {
             wx_colors.push_back(wxColour(color_str));
         }
+        if (wx_colors.empty()) {
+            wx_colors.push_back(wxColour("#636363")); // default color if no colors provided
+        }
 
         // create filament bitmap in multi color
         wxBitmap base_bitmap = Slic3r::GUI::create_filament_bitmap(wx_colors, wxSize(icon_width, icon_height), is_gradient);