this moment I did not understand.Unfortunately using such a tool doesn't really help with the original crash issue.
With THAT utility I completely forgot about this crash.... I said that I found the system where I could reproduce the problem with probability 100/100! And now - after I started to use this 3rd party tool for loading totalcmd.chm file there(on that computer)- I never meet again this problem!
OF course it will be only my decision to continue use such file - so at least I personally will not even face with such problem)))
This "trick" does not work even and in current version of TC installation - w/o this tool. So I don't really understand - what kind of gain can we talk about here, if even now this option does not work.and we can't change pages once the help is up (e.g. when you press F1 in one dialog and later in another, it could not open that page in the existing viewer).