Troubleshoot why Preview project does not work

I have the latest paid version of AutoPlay. I have not used it in about a year.

I have a simple application, 5 pages in total with 3 pages basically "file browser" pages per the help file. On 3 of the pages, I have a listbox with PDF document names. I ask the user to select a document and then click a button that fires the code to open the PDF (code is per the help file...create a File Browser topic). There are about 30 PDF's --about ten per list box on each of the 3 pages. The 30 documents combined are about 20MB in disk space.

I can "preview" each page individually successfully. Each of the 3 pages with the listbox / button to open document all preview individually and the listbox/button function correctly (i.e. PDF documents open in a pdf viewer). However, when I try to preview the entire project, it never displays. The dialog box opens to indicate ts building the preview--but it never opens. When I try to build the project (i.e. to a hard drive folder), the project supposedly builds per the dialog message at the end, but when I open the hard drive folder there is no exe file created.

Any suggestions on how I can troubleshoot are greatly appreciated as I am ready to "give up" and try different software, etc.

Thanks
JimC