Look, I was not trying to complain about the software or anything else. I was giving my two cents just in case someone else ran into the problem. In addition, I thought that it may help improve the software.
Regarding what you mention above, when I purchase this software, I was told that it would integrate with vBulletin. If I don't modify the files as mentioned, PhotoPost won't integrate with my vBulletin installation. My vBulletin was purchased using .html extensions and if you program is looking for php extension files, then your program won't work.
BTW, You can verify what I am saying by trying to download a new version of vbulletin. When you download, it asks you what version you want. Mine is .html.