diff --git a/src/Mod/Start/StartPage/StartPage.py b/src/Mod/Start/StartPage/StartPage.py
index 20589363bf..89a30e4e4f 100644
--- a/src/Mod/Start/StartPage/StartPage.py
+++ b/src/Mod/Start/StartPage/StartPage.py
@@ -415,15 +415,18 @@ def handle():
         for cfolder in cfolders.split(";;"): # allow several paths separated by ;;
             if not os.path.isdir(cfolder):
                 cfolder = os.path.dirname(cfolder)
-            SECTION_CUSTOM += encode("<h2>"+os.path.basename(os.path.normpath(cfolder))+"</h2>")
-            SECTION_CUSTOM += "<ul>"
-            for basename in os.listdir(cfolder):
-                filename = os.path.join(cfolder,basename)
-                SECTION_CUSTOM += encode(buildCard(filename,method="LoadCustom.py?filename="+str(dn)+"_"))
-            SECTION_CUSTOM += "</ul>"
-            # hide the custom section tooltip if custom section is set (users know about it if they enabled it)
-            HTML = HTML.replace("id=\"customtip\"","id=\"customtip\" style=\"display:none;\"")
-            dn += 1
+            if not os.path.exists(cfolder):
+                FreeCAD.Console.PrintWarning("Custom folder not found: %s" % cfolder)
+            else:
+                SECTION_CUSTOM += encode("<h2>"+os.path.basename(os.path.normpath(cfolder))+"</h2>")
+                SECTION_CUSTOM += "<ul>"
+                for basename in os.listdir(cfolder):
+                    filename = os.path.join(cfolder,basename)
+                    SECTION_CUSTOM += encode(buildCard(filename,method="LoadCustom.py?filename="+str(dn)+"_"))
+                SECTION_CUSTOM += "</ul>"
+                # hide the custom section tooltip if custom section is set (users know about it if they enabled it)
+                HTML = HTML.replace("id=\"customtip\"","id=\"customtip\" style=\"display:none;\"")
+                dn += 1
     HTML = HTML.replace("SECTION_CUSTOM",SECTION_CUSTOM)
 
     # build IMAGE_SRC paths