diff --git a/pilot/eventservice/esprocess/esprocess.py b/pilot/eventservice/esprocess/esprocess.py
index 6d727497..0b87e70d 100644
--- a/pilot/eventservice/esprocess/esprocess.py
+++ b/pilot/eventservice/esprocess/esprocess.py
@@ -162,7 +162,7 @@ def init_yampl_socket(self, executable: str) -> str:
         is_mt = "--multithreaded=true" in executable.lower()
         if is_ca:
             if is_mt:
-                preexec_socket_config = f" --mtes=True --mtes_channel=\"{socket_name}\" "
+                preexec_socket_config = f" --mtes=True --mtes-channel=\"{socket_name}\" "
             else:
                 preexec_socket_config = f" --preExec 'ConfigFlags.MP.EventRangeChannel=\"{socket_name}\"' "
         else:
@@ -483,17 +483,7 @@ def parse_out_message(self, message: str) -> dict:
         """
         logger.debug(f'parsing message: {message}')
         try:
-            if message.startswith("/"):
-                parts = message.split(",")
-                ret = {'output': parts[0]}
-                parts = parts[1:]
-                for part in parts:
-                    name, value = part.split(":")
-                    name = name.lower()
-                    ret[name] = value
-                ret['status'] = 'finished'
-                return ret
-            elif message.startswith('ERR'):
+            if message.startswith('ERR'):
                 if "ERR_ATHENAMP_PARSE" in message:
                     pattern = re.compile(r"(ERR\_[A-Z\_]+)\ (.+)\:\ ?(.+)")
                     found = re.findall(pattern, message)
@@ -513,7 +503,15 @@ def parse_out_message(self, message: str) -> dict:
                     ret = {'id': event_range_id, 'status': 'failed', 'message': message}
                     return ret
             else:
-                raise UnknownException(f"Unknown message {message}")
+                parts = message.split(",")
+                ret = {'output': parts[0]}
+                parts = parts[1:]
+                for part in parts:
+                    name, value = part.split(":")
+                    name = name.lower()
+                    ret[name] = value
+                ret['status'] = 'finished'
+                return ret
         except PilotException as e:
             raise e
         except Exception as e:
diff --git a/pilot/eventservice/workexecutor/plugins/raythenaexecutor.py b/pilot/eventservice/workexecutor/plugins/raythenaexecutor.py
index 47e639c3..53fd52f1 100644
--- a/pilot/eventservice/workexecutor/plugins/raythenaexecutor.py
+++ b/pilot/eventservice/workexecutor/plugins/raythenaexecutor.py
@@ -183,6 +183,8 @@ def handle_out_message(self, message: dict):
         if message['status'] in ['failed', 'fatal']:
             self.update_failed_event_ranges([message])
         else:
+            if 'output' in message:
+                message['output'] = os.path.join(self.get_job().workdir, message['output'])
             self.__queued_out_messages.append(message)
 
     def stageout_es(self, force: bool = False):