Hi,Edward:
I have already used the program relax 2.2.5 to run through all diffusion 
model: Sphere, Prolate, Oblate and Ellipsoid in a uni-processor and obtained 
the converged fitting results that passed the convergence test. However, I 
stuck on the "final" mode because of some errors as shown below:
relax> value.set(val=-0.00017199999999999998, param='csa', spin_id='@N')
relax> pipe.create(pipe_name='local_tm - mf', pipe_type='mf', bundle='mf')
relax> results.read(file='results', dir='C:\\relax\\
Model Free Analysis\\local_tm\\aic')
Opening the file 'C:\\relax\\Model Free Analysis 
\\local_tm\\aic\\results.bz2' for reading.
relax> pipe.create(pipe_name='sphere - mf', pipe_type='mf', bundle='mf')
relax> results.read(file='results', dir='C:\\relax\\Model Free Analysis
 \\sphere\\round_13\\opt')
Opening the file 'C:\\relax\\Model Free Analysis
\\sphere\\round_13\\opt\\results.bz2' for reading.
relax> pipe.create(pipe_name='prolate – mf', pipe_type='mf', bundle='mf')
relax> results.read(file='results', dir='C:\\relax\\Model Free Analysis
 \\prolate\\round_123\\opt')
Opening the file 'C:\\relax\\Model FreeAnalysis
\\prolate\\round_123\\opt\\results.bz2' for reading.
relax> pipe.create(pipe_name='oblate - mf', pipe_type='mf', bundle='mf')
relax> results.read(file='results', dir='C:\\relax\\
Model Free Analysis\\oblate\\round_14\\opt')
Opening the file 'C:\\relax\\Model Free Analysis
\\oblate\\round_14\\opt\\results.bz2' for reading.
relax> pipe.create(pipe_name='ellipsoid - mf', pipe_type='mf', bundle='mf')
relax> results.read(file='results',
 dir='C:\\relax\\Model Free Analysis
\\ellipsoid\\round_912\\opt')
Opening the file 'C:\\relax\\Model Free Analysis
\\ellipsoid\\round_912\\opt\\results.bz2' for reading.
relax> model_selection(method='AIC', modsel_pipe='final - mf', bundle='mf',
pipes=['local_tm - mf ', 'sphere - mf', 'prolate - mf',
'oblate - mf', 'ellipsoid - mf '])
AIC model selection.
Global model - all diffusion tensor parameters and spin specific
 model-free parameters.
# Data pipe                                  Num_params_(k)    
Num_data_sets_(n)    Chi2          Criterion     
local_tm - mf (Mon Aug 19 22:40:08 2013)     323               696  
                
5983.71348    6629.71348    
sphere - mf (Mon Aug 19 22:40:08 2013)       237               696 
                 
6374.27910    6848.27910    
prolate - mf (Mon Aug 19 22:40:08 2013)      232               696  
                
6209.77670    6673.77670    
oblate - mf (Mon Aug 19 22:40:08 2013)       235               696 
                 
6274.97999    6744.97999    
ellipsoid - mf (Mon Aug 19 22:40:08 2013)    238               696   
               
6184.98839    6660.98839    
The model from the data pipe 'local_tm - mf' has been selected.
relax> monte_carlo.setup(number=500)
relax> monte_carlo.create_data(method='back_calc')
RelaxError: The specific model has not been selected or set up. 
Do you have any idea what is wrong in the here? 
Thanks
Jing