When I try to open my project in RW7 it says the project theme is missing and “The (null) theme that this document uses is missing. If you open this project, RapidWeaver will apply the Offroad theme. Are you sure you still want to open this project?”
When I choose the button “Apply Theme and Open” nothing happens. I’m sure the theme is installed.
Try getting a fresh copy of the theme. Perhaps it’s gotten corrupted somehow.
If your addons folder is configured to be in a custom location – try moving it to the default location.
If none of these works, zip up the file and share it with the Realmac support folks. This sort of endless loop of errors probably shouldn’t happen – even if there is corruption.