I have inherited a help project, and in the footer, %%Help2FileVersion%% is used. Its value is incorrect currently, and I cannot find where it's defined in the project, or how to change it. If it is the value of the version of the .NET assembly the help documentation is for, it is not getting correctly updated. It should be 4.0 (the version of the assembly), but it is currently 4.5.
Also, the string does not show up in the CHM file (displays as "Documentation Version"), but it does show up in the VS2010 and VS2012 help viewer (displays as "Documentation Version 4.5").