After generating a CHM with Tools>Browsing Sequence, the Advanced Browsing bar shows on some computers but not on others.
Is there something required on some computers for this to show?
Indeed there is. Each computer needs its own copy of a file named HHActiveX.dll. Not only do they need the copy, it must also be registered with the operating system.
For more information, open the help for RoboHelp and search for HHActiveX.dll.
Helpful and Handy Links
worked like a charm -- thank you