Hello. I upgraded to the latest version (1.3.9) after running 1.3.8 for a long while. I'm now getting the following error on every page.
EWWW Image Optimizer couldn't install tools in /home/admin/domains/heyitsfree.net/public_html/wp-content/ewww/. Please adjust permissions or create the folder. If you have installed the tools elsewhere on your system, check the option to 'Use system paths'. For more details, visit the Settings Page or the Installation Instructions.
However I believe I have all four compression tools installed already. The settings page says they are at least and the plugin was optimizing images when I had 1.3.8. My debug info is as follows.
jpegtran path: jpegtran
optipng path: /home/admin/domains/heyitsfree.net/public_html/wp-content/ewww/optipng
gifsicle path: /home/admin/domains/heyitsfree.net/public_html/wp-content/ewww/gifsicle
pngout path: /home/admin/domains/heyitsfree.net/public_html/wp-content/ewww/pngout-static
jpegtran permissions: 0755
gifsicle permissions: 0755
optipng permissions: 0755
wp-content/ewww permissions: 0777
Operating environment: Linux 2.6.32-279.19.1.el6.x86_64 #1 SMP Wed Dec 19 07:05:20 UTC 2012 x86_64