# SMB simulations no longer running on CADET-Process 0.10 **URL:** \ **Category:** CADET Troubleshooting\ **Created:** [February 20, 2025, 11:49pm UTC](https://forum.cadet-web.de/t/smb-simulations-no-longer-running-on-cadet-process-0-10/1168 "2025-02-20T23:49:08Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![joseaniceto](https://forum.cadet-web.de/letter_avatar_proxy/v4/letter/j/a587f6/32.png) [@joseaniceto](https://forum.cadet-web.de/u/joseaniceto)\ **Post date:** [February 20, 2025, 11:49pm UTC](https://forum.cadet-web.de/t/smb-simulations-no-longer-running-on-cadet-process-0-10/1168/1 "2025-02-20T23:49:08Z")
### Expected behavior. Hi I have just updated CADET-Process to 0.10 and all my SMB simulations no longer run. I have tried several variations, including several examples from the docs and I get the same error (below). Can’t understand the problem. If I go back to 0.9 it works. ### Actual behavior ```auto There was an exception in simulate_n_cycles Traceback (most recent call last): File "C:\Users\josep\miniconda3\envs\cadet\Lib\site-packages\CADETProcess\log.py", line 172, in wrapper return function(*args, **kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\josep\miniconda3\envs\cadet\Lib\site-packages\CADETProcess\simulator\simulator.py", line 308, in simulate_n_cycles return self.run(process, **kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\josep\miniconda3\envs\cadet\Lib\site-packages\CADETProcess\simulator\cadetAdapter.py", line 133, in wrapper results = func(self, process, *args, **kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\josep\miniconda3\envs\cadet\Lib\site-packages\CADETProcess\simulator\cadetAdapter.py", line 246, in run raise CADETProcessError( CADETProcess.CADETProcessError.CADETProcessError: CADET Error: Simulation failed with --------------------------------------------------------------------------- CADETProcessError Traceback (most recent call last) Cell In[4], line 7 4 process_simulator = Cadet() 5 process_simulator.n_cycles = 3 ----> 7 simulation_results = process_simulator.simulate(process) 9 _ = simulation_results.solution.raffinate.inlet.plot() 10 _ = simulation_results.solution.extract.inlet.plot() File ~\miniconda3\envs\cadet\Lib\site-packages\CADETProcess\simulator\simulator.py:252, in SimulatorBase.simulate(self, process, previous_results, **kwargs) 249 raise CADETProcessError("Process is not configured correctly.") 251 if not self.evaluate_stationarity: --> 252 results = self.simulate_n_cycles( 253 process, self.n_cycles, previous_results, **kwargs 254 ) 255 else: 256 results = self.simulate_to_stationarity( 257 process, previous_results, **kwargs 258 ) File ~\miniconda3\envs\cadet\Lib\site-packages\CADETProcess\log.py:150, in log_time..log_time_decorator..wrapper(*args, **kwargs) 147 @wraps(function) 148 def wrapper(*args, **kwargs): 149 start = time.time() --> 150 result = function(*args, **kwargs) 151 elapsed = time.time() - start 152 logger = get_logger(logger_name, level=None) File ~\miniconda3\envs\cadet\Lib\site-packages\CADETProcess\log.py:201, in log_results..log_results_decorator..wrapper(*args, **kwargs) 197 logger = get_logger(logger_name, level=None) 199 logger.debug('{} was called with {}, {}'.format( 200 function, *args, **kwargs)) --> 201 results = function(*args, **kwargs) 202 logger.debug(f'Results: {results}') 204 return results File ~\miniconda3\envs\cadet\Lib\site-packages\CADETProcess\log.py:180, in log_exceptions..log_exception_decorator..wrapper(*args, **kwargs) 177 logger.exception(err) 179 # re-raise the exception --> 180 raise e File ~\miniconda3\envs\cadet\Lib\site-packages\CADETProcess\log.py:172, in log_exceptions..log_exception_decorator..wrapper(*args, **kwargs) 170 logger = get_logger(logger_name, level=None) 171 try: --> 172 return function(*args, **kwargs) 173 except Exception as e: 174 # log the exception 175 err = "There was an exception in " File ~\miniconda3\envs\cadet\Lib\site-packages\CADETProcess\simulator\simulator.py:308, in SimulatorBase.simulate_n_cycles(self, process, n_cyc, previous_results, **kwargs) 305 if previous_results is not None: 306 self.set_state_from_results(process, previous_results) --> 308 return self.run(process, **kwargs) 310 self.n_cycles = n_cyc_orig File ~\miniconda3\envs\cadet\Lib\site-packages\CADETProcess\simulator\cadetAdapter.py:133, in Cadet.locks_process..wrapper(self, process, *args, **kwargs) 130 process.lock = True 131 locked_process = True --> 133 results = func(self, process, *args, **kwargs) 135 if locked_process: 136 process.lock = False File ~\miniconda3\envs\cadet\Lib\site-packages\CADETProcess\simulator\cadetAdapter.py:246, in Cadet.run(self, process, cadet, file_path) 241 if return_information.return_code != 0: 242 self.logger.error( 243 f'Simulation of {process.name} ' 244 f'with parameters {process.config} failed.' 245 ) --> 246 raise CADETProcessError( 247 f'CADET Error: Simulation failed with {return_information.error_message}' 248 ) from None 250 try: 251 results = self.get_simulation_results( 252 process, cadet, elapsed, return_information 253 ) CADETProcessError: CADET Error: Simulation failed with ``` ### How to produce bug (including a minimal reproducible example) Just trying to run the example from the SMBBuilder documentation gives me the error. ### File produced by `conda env export > environment.yml` [cadet-env.yml](https://forum.cadet-web.de/uploads/short-url/bd6OGJouTAfhUXcUFfMKLhSVUZk.yml) (17.4 KB) ---
**Author:** ![j.schmoelder](https://forum.cadet-web.de/user_avatar/forum.cadet-web.de/j.schmoelder/32/93_2.png) [@j.schmoelder](https://forum.cadet-web.de/u/j.schmoelder)\ **Post date:** [February 21, 2025, 7:28am UTC](https://forum.cadet-web.de/t/smb-simulations-no-longer-running-on-cadet-process-0-10/1168/2 "2025-02-21T07:28:45Z")
Hi José, unfortunately, I could not reproduce the issue with CADET-Process; for me, it runs fine with v0.9/v0.10/dev-branch. But I feel your frustration and I’m happy to investigate this further during a call, ideally during our next [office hours](https://forum.cadet-web.de/t/introducing-office-hours/518), but if it’s urgent, I could also make some time next week. Best regards, Jo ---
**Author:** ![joseaniceto](https://forum.cadet-web.de/letter_avatar_proxy/v4/letter/j/a587f6/32.png) [@joseaniceto](https://forum.cadet-web.de/u/joseaniceto)\ **Post date:** [February 21, 2025, 9:30pm UTC](https://forum.cadet-web.de/t/smb-simulations-no-longer-running-on-cadet-process-0-10/1168/4 "2025-02-21T21:30:13Z")
Hey Jo Hope all is great with you. Thanks for the quick feedback. Must be something with my env then. Although I did create a clean one to test 0.10. I will make some more tests and I will join in the next office hours. It’s nothing urgent and I can always go back to 0.9, but I would like to understand the problem and keep up with development. Thanks again. ---
**Author:** ![h.lanzrath](https://forum.cadet-web.de/user_avatar/forum.cadet-web.de/h.lanzrath/32/1186_2.png) [@h.lanzrath](https://forum.cadet-web.de/u/h.lanzrath)\ **Post date:** [January 27, 2026, 11:41am UTC](https://forum.cadet-web.de/t/smb-simulations-no-longer-running-on-cadet-process-0-10/1168/5 "2026-01-27T11:41:51Z")