Well vbSEO is incorrect in there thinking here. It is there application that is interfering with ours which integrates fine with a default vb install. It is not till you use vbseo that you have an issue. Replies like that just make me laugh.
Thats like a hack author telling you the problem is with vbulletin not there mod.
Try setting in your vbSEO control panel where they allow you to specify directories NOT to touch with there program your photopost product directory names accordingly.
You should then be fine and might want to pass along to them the correct answer of how to solve there customers issues since the fix has to do with proper configuration of there program and nothing in our code.
The problem is there code is not allowing certain variables to be correctly set in our programing to define whether a person has vb3 or vb4. We have used such variables for almost 7 years now longer than there program has been around.