This is a common error which can have several causes, typically after installing the WebHub components on a computer for the first time and trying to compile in Delphi.

• You do have the apiBuilt DCU file on your computer, but the particular path is not on the search path for the current project nor on the global library path.
• You have not installed the WebHub Components so you do not have the file at all.
• HREF Tools made a mistake and did not ship the apiBuilt unit (unlikely but theoretically possible)

Background

The apiBuilt unit does not ship with Object Pascal source (PAS code). You should find apiBuilt.dcu in the webhub\lib\d## folder, where d## is your version of Delphi, e.g. D07 for Delphi 7.