diff --git a/nodes/agent/BaseAgent.py b/nodes/agent/BaseAgent.py
index c64a341..63dd938 100644
--- a/nodes/agent/BaseAgent.py
+++ b/nodes/agent/BaseAgent.py
@@ -1,3 +1,6 @@
+import logging
+
+from comfy_execution.graph import ExecutionBlocker
 from griptape.drivers import DummyVectorStoreDriver
 from griptape.tools import QueryTool, RagTool, VectorStoreTool
 from openai import OpenAIError
@@ -179,8 +182,16 @@ class BaseAgent:
 
             # Warn for models
             model, simple_model = self.agent.model_check()
-
+            if model == "":
+                error_msg = "You have provided a blank model for the Agent Configuration.\n\nPlease specify a model configuration, or disconnect it from the agent."
+                logging.error(error_msg)
+                raise Exception(error_msg)
+                return (
+                    ExecutionBlocker(error_msg),
+                    self.agent,
+                )
             if simple_model:
+                print(f"This is a simple model: {model}")
                 return (self.agent.model_response(model), self.agent)
 
             # Check for inputs. If none, then just create the agent
@@ -193,10 +204,6 @@ class BaseAgent:
                 else:
                     prompt_text = STRING + "\n\n" + input_string
 
-                # if len(tools) > 0:
-                #     self.agent.add_task(ToolkitTask(prompt_text, tools=tools))
-                # else:
-                #     self.agent.add_task(PromptTask(prompt_text))
                 result = self.agent.run(prompt_text)
                 output_string = result.output_task.output.value
             return (
diff --git a/nodes/agent/gtComfyAgent.py b/nodes/agent/gtComfyAgent.py
index 41d8122..6084294 100644
--- a/nodes/agent/gtComfyAgent.py
+++ b/nodes/agent/gtComfyAgent.py
@@ -54,7 +54,7 @@ class gtComfyAgent(Agent):
         simple_models = ["llama3", "llama3:latest", "mistral", "LLama-3"]
         drivers = ["OllamaPromptDriver", "LMStudioPromptDriver"]
         agent_prompt_driver_name = self.prompt_driver.__class__.__name__
-
+        print(f"Agent Prompt Driver Name: {agent_prompt_driver_name=}")
         model = self.prompt_driver.model
         if agent_prompt_driver_name in drivers:
             if model == "":
diff --git a/nodes/config/gtUILMStudioDriversConfig.py b/nodes/config/gtUILMStudioDriversConfig.py
index 5f1c23f..3b1a09d 100644
--- a/nodes/config/gtUILMStudioDriversConfig.py
+++ b/nodes/config/gtUILMStudioDriversConfig.py
@@ -1,3 +1,6 @@
+import logging
+
+from comfy_execution.graph import ExecutionBlocker
 from griptape.configs import Defaults
 from griptape.configs.drivers import (
     DriversConfig,
@@ -48,33 +51,37 @@ class gtUILMStudioDriversConfig(gtUIBaseDriversConfig):
     def create(self, **kwargs):
         drivers_config_params = {}
 
-        # Create instances of the driver classes
-        prompt_driver_builder = gtUILMStudioChatPromptDriver()
-        embedding_driver_builder = gtUILMStudioEmbeddingDriver()
-
-        # Build parameters for drivers
-        prompt_driver_params = prompt_driver_builder.build_params(**kwargs)
-        embedding_driver_params = embedding_driver_builder.build_params(**kwargs)
-
-        # Create Driver Configs
-        drivers_config_params["prompt_driver"] = OpenAiChatPromptDriver(
-            **prompt_driver_params
-        )
-        if "model" not in embedding_driver_params:
-            drivers_config_params["embedding_driver"] = DummyEmbeddingDriver()
-        else:
-            drivers_config_params["embedding_driver"] = OpenAiEmbeddingDriver(
-                **embedding_driver_params
-            )
-
-        drivers_config_params["vector_store_driver"] = LocalVectorStoreDriver(
-            embedding_driver=drivers_config_params["embedding_driver"]
-        )
-
         try:
+            # Create instances of the driver classes
+            prompt_driver_builder = gtUILMStudioChatPromptDriver()
+            embedding_driver_builder = gtUILMStudioEmbeddingDriver()
+
+            # Build parameters for drivers
+            prompt_driver_params = prompt_driver_builder.build_params(**kwargs)
+            embedding_driver_params = embedding_driver_builder.build_params(**kwargs)
+            if "model" not in prompt_driver_params:
+                custom_config = ExecutionBlocker(
+                    "Please provide a model for the prompt driver."
+                )
+                return (custom_config,)
+            # Create Driver Configs
+            drivers_config_params["prompt_driver"] = OpenAiChatPromptDriver(
+                **prompt_driver_params
+            )
+            if "model" not in embedding_driver_params:
+                drivers_config_params["embedding_driver"] = DummyEmbeddingDriver()
+            else:
+                drivers_config_params["embedding_driver"] = OpenAiEmbeddingDriver(
+                    **embedding_driver_params
+                )
+
+            drivers_config_params["vector_store_driver"] = LocalVectorStoreDriver(
+                embedding_driver=drivers_config_params["embedding_driver"]
+            )
             Defaults.drivers_config = DriversConfig(**drivers_config_params)
             custom_config = Defaults.drivers_config
         except Exception as e:
-            print(e)
+            custom_config = ExecutionBlocker(f"{e}")
+            logging.error(e)
 
         return (custom_config,)
diff --git a/nodes/drivers/gtUILMStudioChatPromptDriver.py b/nodes/drivers/gtUILMStudioChatPromptDriver.py
index c355a47..9eafe0e 100644
--- a/nodes/drivers/gtUILMStudioChatPromptDriver.py
+++ b/nodes/drivers/gtUILMStudioChatPromptDriver.py
@@ -1,3 +1,4 @@
+from comfy_execution.graph import ExecutionBlocker
 from griptape.drivers import OpenAiChatPromptDriver
 
 from .gtUIOpenAiCompatibleChatPromptDriver import gtUIOpenAiCompatibleChatPromptDriver
@@ -78,9 +79,12 @@ class gtUILMStudioChatPromptDriver(gtUIOpenAiCompatibleChatPromptDriver):
     def create(self, **kwargs):
         params = self.build_params(**kwargs)
 
+        if not params.get("model"):
+            driver = ExecutionBlocker("Model is required.")
+            return (driver,)
         try:
             driver = OpenAiChatPromptDriver(**params)
             return (driver,)
         except Exception as e:
-            print(f"Error creating driver: {e}")
-            return (None, str(e))
+            driver = ExecutionBlocker(f"Error creating driver: {e}")
+            return (driver,)