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Sandcastle Help File BuilderPRJ0001: Invalid or missing SchemaVersion

Error PRJ0001: Invalid or missing SHFBSchemaVersion


This error is caused by a missing schema version property in the project.


The most likely cause of this error is that you have attempted to load a project file that is not valid for use with the current release of the help file builder. Only projects using the newer MSBuild format can be loaded with version and later. Recreate the project with the current help file builder release.

Another cause is loading an MSBuild project file that was not created by the help file builder. Depending on what the project file is for, you may be able to convert it to the help file builder format too.

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