I'm having a sudden problem with the mod that wasn't occurring before.
The images created by dynamicimages are no longer being loaded. The images are at
http://www.domain.com/files/t_1.jpg, etc. The cache directory is empty. Attempting to load the image directly in the browser returns a 403 forbidden error.
/files has a .htaccess file that includes "Deny from all". /files/cache has a .htaccess file that includes "Allow from all". Presumably removing the Deny from all in the /files directory would fix the problem, but would that create a security hole?