>Problem occurs when I do an installation using install shield to a computer which has not had vfp installed, an application which uses a custom .chp help file.
>
>The help file works fine on any computer which has had vfp installed.
>
>The help file works ok if you double click it in file manager ( on "problem" computer.
>
>Inside my application on a problem computer, if you click on help or F1, nothing happens - no help, no errors, nothing.

Mike,

Did you include VFP8 HTML help support library VFP8HTMLHelp.msm merge module in the ISX project?