Error message "Internal application error" shows twice when opening File tab in Foxit Reader 7.3.6.321

Installing and running program is ok. Opening PDF-documents is ok. But when I switch to File tab and then press Properties, Create, Open and other buttons at the first time, twice shows error dialog "internal application error" with title "Foxit Reader", and these buttons doesn't work but app doesn't crashes. After that error dialogs doesn't shows and program works nice.