first of all: thank for a great plugin. It does a really good job!
I'm just having an issue with the log file (retinaimages.log), which is written although I don't have the debug option checked. Besides from eating up space and performance, I need to have my plugin directory writable, otherwise I'm just getting fopen errors and no images.
define('DEBUG', false); right on top of wr2x_retinaimages.php solves the issue for me, but I need to do this after each and every update of the plugin.
I'd be fine with just setting the the DEBUG variable in wp-config.php, but that doesn't work either... Any ideas?
Best -- marc (marcbecher.com)