Twitter: catch ValueError if the provided index isn't a number at all

modules/Twitter.py

@@ -138,12 +138,17 @@ class Twitter(Module):
             user = match.group(1)
             index = match.group(2)
 
-            if index:
-                index = int(index)
-                if index > 0:
+            try:
+                if index:
+                    index = int(index)
+                    if index > 0:
+                        index = 0
+                else:
                     index = 0
-            else:
+            except ValueError as e:
+                print('Couldn\'t convert index: ' + str(e))
                 index = 0
+
             count = (-1*index) + 1
 
             try: