Importing ROI data

Hi,
I recently have an error using CONN15h:
Error using ==> conn_process at 606
No suprathreshold voxels in ROI file /net/storage1/usr2/onrc/home/Hemam/onrc/data/Conn_NBOLD/T1Img/wc3ccon_1.nii after erosion (original file contained 3049 suprathreshold voxels)

Error in ==> conn_process at 14
case 'setup', disp(['CONN: RUNNING SETUP STEP']); conn_process([0:4,4.5,5]);
Error in ==> conn at 2977
else conn_process('setup');
Error in ==> conn_menumanager at 119
feval(CONN_MM.MENU{n0}.callback{n1}{1},CONN_MM.MENU{n0}.callback{n1}{2:end});
CONN v.15.h
SPM8 + Anatomy Beamforming CCAfMRI DEM FieldMap GLMFlex INRIAlign LI LST MEEGtools Masking OrthoView SimpleROIBuilder TFCE adaptivethresholding conn iBrainTools marsbar ns rfxplot suit vbm5 vbm8 wfupickatlas xjview
Matlab v.2010b
storage: 6154.6Gb available
Warning: Contents.m overloaded by version in folder /opt/spm8/toolbox/vbm5
Warning: spm_defaults.m overloaded by version in folder /opt/center_scripts8
Warning: spm_input.m overloaded by version in folder /opt/center_scripts8/toolbox/INRIAlign