OMG, now it's running! I got it: - BEFORE, i right-clicked -> New... -> MS Word document, and instantly renamed it to "help.rtf", and finally double-clicked it for editing. This does NOT create an RTF file, but a DOC file with RTF extension! - NOW, i opened Word, File -> New, edited, File -> Save as... -> RTF document. Everything OK. Thankyou!