BE0040: Project assembly does not exist: [assembly]

Error BE0040: Project assembly does not exist: [assembly]

This error occurs if the assembly from a project file documentation source cannot be found.

The most likely cause of this error is that the project has not been built. Build the project so that the assembly exists and then build the help file project. In addition, check the Configuration and Platform settings on the documentation source to ensure that they are selecting the assembly that was built (i.e. Debug or Release). If they are not specified, check the settings in the GUI (if used) or the command line options (if built with MSBuild) for the correct settings. If not specified, they default to Debug and AnyCPU respectively.

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