Error running xQSM

[MHoch96]

When I run xQSM as the dipole inversion step, I get the following error:

The following QSM algorithm will be used: xQSM
Warning: Name is nonexistent or not a directory:
/home/common/matlab/sepia/external/deepMRI/xQSM/matlab/eval

In path (line 109)
In addpath (line 86)
In Wrapper_QSM_xQSM (line 39)
In QSMMacro (line 108)
In SepiaIOWrapper (line 327)
In sepiaIO (line 79)
In sepia_config_56 (line 38)
In run (line 91)
In sepia>PushbuttonStart_Callback (line 353)
Warning: Name is nonexistent or not a directory:
/home/common/matlab/sepia/external/deepMRI/xQSM_data/checkpoints
In path (line 109)
In addpath (line 86)
In Wrapper_QSM_xQSM (line 40)
In QSMMacro (line 108)
In SepiaIOWrapper (line 327)
In sepiaIO (line 79)
In sepia_config_56 (line 38)
In run (line 91)
In sepia>PushbuttonStart_Callback (line 353)
There was an error! Please check the command window/error message file for more information.
Unrecognized function or variable 'field'.

Error in Wrapper_QSM_xQSM (line 50)
[localField, pos] = ZeroPadding(field, 8);

Error in QSMMacro (line 108)
chi = feval(wrapper_QSM_function{k},localField,mask,matrixSize_new,voxelSize,algorParam, headerAndExtraData);

Error in SepiaIOWrapper (line 327)
[chi,mask_ref] = QSMMacro(localField,mask_QSM,matrixSize,voxelSize,algorParam,headerAndExtraData);

Error in sepiaIO (line 79)
SepiaIOWrapper(input,output,maskFullName,algorParam);

Error in sepia_config_56 (line 38)
sepiaIO(input,output_basename,mask_filename,algorParam);

Error in run (line 91)
evalin('caller', strcat(script, ';'));

Error in sepia>PushbuttonStart_Callback (line 353)
run(configFilename);

Error while evaluating UIControl Callback.

Do I need to install another toolbox to use this method?

[kschan0214]

Hi, to be able to use xQSM, you will need the extra toolbox and data from them. You may find the instructions for setting up xQSM here: https://github.com/kschan0214/sepia/tree/master/addons/qsm/xQSM
or here:
https://sepia-documentation.readthedocs.io/en/latest/method/qsm/xQSM.html