[Forum] PM popup path

[tattooz]

How do I change the PM popup path for 4.1.0?I am using the photopost gallery integrated which is located at photopost.modificationnation.com. My main forum is at modificationnation.com, so when someone is browsing the gallery and gets a popup notification they click it and get a 404 since it tries to open it at the photopost url. Make sense?

I need to change the path to go to my main forum
Thanks