I tried all of the above and I found my own solution. Maybe this will help someone else one day :
My system : Windows 10 IPEC 10074 64 bit, MATLAB R2015a 32bit
On the matlab shortcut, I went on its properties and changed the compatibility settings :
a.) Change settings for all users
b.) Windows 7 as compatibility mode
c.) Run this program as an administrator
After I did that, matlab finally did not crash anymore when trying to plot.