Share 're-installed'

Dear all, I have re-installed my Acad (2013) - Win 7, and previously downloaded nxt-file (arnxt64_0358-RI18, quiet old one...) It used to work perfectly before, therefore I have expected no problems, so I clicked "replace unused computer" before re-instalation, of course... Unfortunately it doesn't work at all now...  :( See attached screenshot, please. Any hope for help from any of you? Maybe Ri…