Dear CONN experts,

I am analysing resting-state data from two groups (and was able to perform all steps and look at second level analyses).

Now, to look at a subset of participants without losing the previous analyses, I used 'save as' to save it as a new project. Then I removed a few participants, added an atlas and re-ran the setup step (with overwrite), which worked.

I encounter an error as soon as Step 3/6: Denoising functional data starts.

ERROR DESCRIPTION:

Error using fwrite
Invalid file identifier. Use fopen to generate a valid file identifier.
Error in conn_init_vol (line 27)
fwrite(handle,[0],'float',4*(sum(V.size.Nv)*V.size.Nt));
Error in conn_process (line 1105)
Youtnorm0{nses}=conn_init_vol(Youtnorm0{nses});
Error in conn_process (line 28)
case {'preprocessing_gui','denoising_gui'}, disp(['CONN: RUNNING DENOISING STEP']); conn_process([1.5,2,6:9],varargin{:});
Error in conn (line 5070)
else conn_process('denoising_gui'); ispending=false;
Error in conn_menumanager (line 120)
feval(CONN_MM.MENU{n0}.callback{n1}{1},CONN_MM.MENU{n0}.callback{n1}{2:end});
CONN v.17.f
SPM12 + DEM FieldMap MEEGtools
Matlab v.2014b
storage: 669.9Gb available

I cannot figure out where the problem is, so I have no idea where to start with troubleshooting.

Thank you for all advice.

Hi there,

did you ever find a solution to this, I am having the same issue and can't seem to find a solution anywhere.

Thanks

Hi Ben,

"fwrite" errors indicate a problem when attempting to write a file to disk. Some of the most common reasons could be a full disk, an external or network drive which got disconnected, or some write-permissions issue with the target folder or file.

Hope this helps
Alfonso
Originally posted by Ben Jackson: