Hi JayRichard
You might try the following.
Inside RoboHelp HTML, click Tools > Options...
Click the Tool Locations tab
At the bottom of the dialog should be an area listing
"Browser paths". You should see one for Internet Explorer and one
for Netscape. Try clicking the little file folder icon to the right
of one of them. (Whichever browser you are using)
Navigate to and select the executable file for the browser.
Mine for Internet Explorer says:
D:\Program Files\...\iexplore.exe (The full path is
D:\Program Files\Internet Explorer\iexplore.exe
Dismiss the dialogs by clicking the Open and OK buttons until
they are all gone.
Keep us posted on whether this helps... Rick