Hello there,
This is one of the many problems (although this one is admittedly quite minor) I had installing SIMPLE onto a GNU/Linux system (Debian).
Upon largely successful installation I noticed that the logo was missing from the top right left of the page.
I managed to trace this bug to the file $HOME/templates/TleUi.php.tpl (where $HOME is the SIMPLE home directory; this is /var/www/simple on my set-up)
Anyway, I found this file contained a few references to /images. Changing these references to images (i.e. without the back-slash at the beginning) fixed the problem.
regards,
Jonathan