I did check the installshield site with out find any anwswes.

I solved problem by deleting the project and starting over.

>>I removed what looked like a few extra (what looked like bogus enteries) from the INSTALLDIR list (by right clicking and selecting delete).
>>
>>Now build command produces no error messages, but when I try to test the build or run it the screen has back and next buttons disable, only enabled button is cancel.
>>
>>What do I do now?
>
>I would go to Installshield support web site and search there KB.