Can't find the topics from the main table of contents

Question

I need urgent help. I am still running RH 8 for Word (2007). I published the entire project. When testing the main table of contents, the books and topics appear as expected, but when I try to go to any of the topics I get the message:
The topic does not exist. Contact your application vendor....
From the individual projects I can see the topics. When I publish them and view the contents all seem to work fine, but it does not when viewing the entire project from the main table of contents.
The main project looks as follows:

Answer 1

Tried that and still have the problem. The RH help lists the following workaround for the error
message :
To workaround this WinHelp viewer limitation, you can either manually insert the Help filename statement on every page of the external CNT file or allow RoboHelp to automatically do it for you:
1 Open the Help file containing the included external CNT file.
2 From RoboHelp Explorer’s File menu, select Project Settings.
3 Select the Contents tab.
4 Select the Include Help filename with pages option. When you save the TOC file, this option automatically places the "@helpfilename.hlp" inside the CNT file on every page.
5 Click OK.
6 Save the external CNT file.
7 Recompile the Help project
I went to the main index project which contains the external cnt file and tried to select the contents tab (no such tab in the project settings). Then I went to the actual project, and again, selected Project Settings there is no Contents Tab. Is there any other way to get that contents tab?
This is how my screen looks like:
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