Quote:there is none.. I just looked
If so, then you have not used the Zenphoto distribution package. Zenphoto cannot perform a virgin install without the file and Setup would have reported it missing when you tried your install.
Note that there have been others with problems installing on LAMP/ubuntu and other off the main-line configurations.
There has been some work in the 1.4.4 branch based on some user testing. You might want to give it a try--nightly builds development files.
Regarding the file permissions: Setup is not "asking" for anything. It is telling you what the permissions are and offering you a drop-down list of possible selections.
If Setup did offer `0777` and `0755` you are also not installing a very current version of Zenphoto. That might also have some bearing on you issues.