diff --git a/glob/manager_core.py b/glob/manager_core.py
index b70ab0f2..49da05da 100644
--- a/glob/manager_core.py
+++ b/glob/manager_core.py
@@ -42,7 +42,7 @@ import manager_downloader
 from node_package import InstalledNodePackage
 
 
-version_code = [3, 27, 4]
+version_code = [3, 27, 5]
 version_str = f"V{version_code[0]}.{version_code[1]}" + (f'.{version_code[2]}' if len(version_code) > 2 else '')
 
 
diff --git a/js/custom-nodes-manager.js b/js/custom-nodes-manager.js
index ec21ad85..76cad9e6 100644
--- a/js/custom-nodes-manager.js
+++ b/js/custom-nodes-manager.js
@@ -1584,6 +1584,7 @@ export class CustomNodesManager {
 
 		let unresolved_aux_ids = {};
 		let outdated_comfyui = false;
+		let unresolved_cnr_list = [];
 
 		for(let k in allUsedNodes) {
 			let node = allUsedNodes[k];
@@ -1596,7 +1597,14 @@ export class CustomNodesManager {
 					}
 
 					let item = this.custom_nodes[node.properties.cnr_id];
-					hashMap[item.hash] = true;
+					if(item) {
+						hashMap[item.hash] = true;
+					}
+					else {
+						console.log(`CM: cannot find '${node.properties.cnr_id}' from cnr list.`);
+						unresolved_aux_ids[node.properties.cnr_id] = node.type;
+						unresolved_cnr_list.push(node.properties.cnr_id);
+					}
 				}
 				else if(node.properties.aux_id) {
 					unresolved_aux_ids[node.properties.aux_id] = node.type;
@@ -1607,6 +1615,16 @@ export class CustomNodesManager {
 			}
 		}
 
+
+		if(unresolved_cnr_list.length > 0) {
+			let error_msg = "Failed to find the following ComfyRegistry list.\nThe cache may be outdated, or the nodes may have been removed from ComfyRegistry.<HR>";
+			for(let i in unresolved_cnr_list) {
+				error_msg += '<li>'+unresolved_cnr_list[i]+'</li>';
+			}
+
+			show_message(error_msg);
+		}
+
 		if(outdated_comfyui) {
 			customAlert('ComfyUI is outdated, so some built-in nodes cannot be used.');
 		}
diff --git a/pyproject.toml b/pyproject.toml
index 5d5295e6..4aa6e238 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 [project]
 name = "comfyui-manager"
 description = "ComfyUI-Manager provides features to install and manage custom nodes for ComfyUI, as well as various functionalities to assist with ComfyUI."
-version = "3.27.4"
+version = "3.27.5"
 license = { file = "LICENSE.txt" }
 dependencies = ["GitPython", "PyGithub", "matrix-client==0.4.0", "transformers", "huggingface-hub>0.20", "typer", "rich", "typing-extensions", "toml", "uv", "chardet"]