Index: leahi_dialin/fp/filtration_purification.py
===================================================================
diff -u -r1f2bf6d939eb4033dbedb7d7005494cc12fccbc6 -r88eea899fa8d03596f944505285bf3049e64312b
--- leahi_dialin/fp/filtration_purification.py	(.../filtration_purification.py)	(revision 1f2bf6d939eb4033dbedb7d7005494cc12fccbc6)
+++ leahi_dialin/fp/filtration_purification.py	(.../filtration_purification.py)	(revision 88eea899fa8d03596f944505285bf3049e64312b)
@@ -190,13 +190,14 @@
         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.fp_version = f"v{result['major']}.{result['minor']}.{result['micro']}-{result['build']}.{result['compatibility']}"
             self.logger.debug(f'FP VERSION: {self.fp_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.fp_fpga_version = f"v{result['fpga_id']}.{result['fpga_major']}.{result['fpga_minor']}-{result['fpga_lab']}"
             self.logger.debug(f'FP FPGA VERSION: {self.fp_fpga_version}')
+        
         self.fp_version_response_timestamp = timestamp