I am trying to use coppermine in a univeristy system where the IT people limit permissions to 750/770. No "other" permissions are allowed. The installation can be found at
http://www.clemson.edu/OLLI/photos. This url is into a virtual system, I believe running Apache on Linux. Having read the documentation and instructions, I tried the installation and found that things almost work. I can create users, and users can create albums and upload photos. Users and guests can browse photos. So, minimal functioning is there. I realize the importance of permissions, but cannot convince the hosting providers to change unless I can explain the necessity. Unfortunately, my lack of expertise in php limits my ability to be specific as to the impact of other than the required permissions.
While minimal function is achieved, full functioning is desired. For example, in submitting a contact form, the captcha image is not display, so of course no contact form can be submitted. The sample plug-in cannot be installed. After the installation, from the prompt for username and password, the next page is a 404 from the server. This happens when trying to install the captcha2.0 plug-in as well; I have not tried others.
I have not tried other functions, but my belief is that coppermine functions that result in creating a file by user action will probably fail. Is this sufficient information for you? If not, I can enable guest or admin accounts in the installation.
Del