Index: leahi_dialin/td/treatment_delivery.py
===================================================================
diff -u -r5ebadf2099b379c5ee6d8417be5e3121c74611cf -r5994adea1a1022175f9cc4e6dacfa02de3fc45a0
--- leahi_dialin/td/treatment_delivery.py	(.../treatment_delivery.py)	(revision 5ebadf2099b379c5ee6d8417be5e3121c74611cf)
+++ leahi_dialin/td/treatment_delivery.py	(.../treatment_delivery.py)	(revision 5994adea1a1022175f9cc4e6dacfa02de3fc45a0)
@@ -222,11 +222,11 @@
         result = self.process_into_vars(decoder_list = msg_list,
                                         message = message)
 
-        if all([len(each) > 0 for each in [result['major'], result['minor'], result['micro'], result['build'], result['compatibility']]]):
+        if all([each is not None for each in [result['major'], result['minor'], result['micro'], result['build'], result['compatibility']]]):
             self.td_version = f"v{result['major']}.{result['minor']}.{result['micro']}-{result['build']}.{result['compatibility']}"
             self.logger.debug(f'TD VERSION: {self.td_version}')
 
-        if all([len(each) > 0 for each in [result['fpga_id'], result['fpga_major'], result['fpga_minor'], result['fpga_lab']]]):
+        if all([each is not None for each in [result['fpga_id'], result['fpga_major'], result['fpga_minor'], result['fpga_lab']]]):
             self.td_fpga_version = f"v{result['fpga_id']}.{result['fpga_major']}.{result['fpga_minor']}-{result['fpga_lab']}"
             self.logger.debug(f'TD FPGA VERSION: {self.td_fpga_version}')
 
@@ -257,7 +257,7 @@
         result = self.process_into_vars(decoder_list = msg_list,
                                         message = message)
 
-        if all([len(each) > 0 for each in [result['major'], result['minor'], result['micro'], result['build'], result['compatibility']]]):
+        if all([each is not None for each in [result['major'], result['minor'], result['micro'], result['build'], result['compatibility']]]):
             self.ui_version = f"v{result['major']}.{result['minor']}.{result['micro']}-{result['build']}.{result['compatibility']}"
             self.logger.debug(f'UI VERSION: {self.ui_version}')
         else:
@@ -295,8 +295,8 @@
         @return: 1 if logged in, 0 if log in failed
         """
         message = CanMessage.build_message(channel_id=CanChannels.dialin_to_td_ch_id,
-                                              message_id=MsgIds.MSG_ID_TD_TESTER_LOGIN_REQUEST.value,
-                                              payload=list(map(int, map(ord, self.TD_LOGIN_PASSWORD))))
+                                           message_id=MsgIds.MSG_ID_TD_TESTER_LOGIN_REQUEST.value,
+                                           payload=list(map(int, map(ord, self.TD_LOGIN_PASSWORD))))
 
         self.logger.debug("Logging in...")
 
@@ -404,13 +404,17 @@
 
         @return: none
         """
-        message = CanMessage.build_message(channel_id=CanChannels.dialin_to_td_ch_id,
-                                              message_id=MsgIds.MSG_ID_TD_UI_VERSION_INFO_REQUEST.value)
+        return cmd_generic_override(
+            payload = None,
+            reset = None,
+            channel_id = CanChannels.td_to_ui_ch_id,
+            msg_id = MsgIds.MSG_ID_TD_UI_VERSION_INFO_REQUEST,
+            entity_name = 'UI Versions Request',
+            override_text = '',
+            logger = self.logger,
+            can_interface = self.can_interface)
 
-        self.logger.debug("Sending an UI version request to the TD.")
-        self.can_interface.send(message, 0)
 
-
     def cmd_training_test_override(self, value: int, reset: int = NO_RESET) -> int:
         """
         Constructs and sends a training test override request to the TD.