PRJ0002: The selected file is for a more recent version
Error PRJ0002: The selected file is for a more recent version of the help file builder. Please upgrade your copy to load the file.
Cause
As indicated, the selected project file is for a more recent version of the help file builder. It contains project options that cannot be handled by your current release.
Solution
Upgrade to the latest release of Sandcastle and the Sandcastle Help File Builder.