When you try to generate a merged project from Adobe RoboHelp 6, you receive these error messages:
"Internal error encountered, Failed to generate WebHelp."
"Warning: [path to file] cannot be copied to [path to output]. reason: source does not exist."
This can occur if you have a relative link in your project that points to a location that is not contained within your project.
Update RoboHelp HTML to resolve this issue.
Backup the MpjSingleSource.dll file:
Install the update:
You should now be able to generate your project without the above errors.