diff --git a/koboldcpp.py b/koboldcpp.py
index 52d3b5ffa..1e5130a17 100644
--- a/koboldcpp.py
+++ b/koboldcpp.py
@@ -162,11 +162,12 @@ def generate(prompt,max_length=20, max_context_length=512,temperature=0.8,top_k=
     inputs.rep_pen = rep_pen
     inputs.rep_pen_range = rep_pen_range
     inputs.seed = seed
-    for n in range(0,stop_token_max):
-        if n >= len(stop_sequence):
-            inputs.stop_sequence[n] = "".encode("UTF-8")
-        else:
-            inputs.stop_sequence[n] = stop_sequence[n].encode("UTF-8")
+    if stop_sequence: 
+        for n in range(0,stop_token_max):
+            if n >= len(stop_sequence):
+                inputs.stop_sequence[n] = "".encode("UTF-8")
+            else:
+                inputs.stop_sequence[n] = stop_sequence[n].encode("UTF-8")
     ret = handle.generate(inputs,outputs)
     if(ret.status==1):
         return ret.text.decode("UTF-8","ignore")
@@ -501,8 +502,9 @@ def main(args):
         print("Otherwise, please manually select ggml file:")
         try:
             show_gui()
-        except Exception as ex:
+        except Exception as ex:            
             print("File selection GUI unsupported. Please check command line: script.py --help")
+            print("Reason for no GUI: " + str(ex))
             time.sleep(2)
             sys.exit(2)