Mark suggested to modify the "plot****_dtttfs.m" scripts for QUAD HLTS HSTS HAUX and BSFM. 
From now, it will automatically create a Results folder in the right path (if it is not already existing) to save the pdf figures.

For example .../SusSVN/sus/trunk/HAUX/Common/MatlabTools/plotHAUX_dtttfs.m 
line 108 to 113 :

DIR=exist(resultsDir,'dir');
if DIR==7
else
    system(['mkdir -p ' resultsDir])
end