On Thu, 3 Sep 2009, Riccardo (Jack) Lucchetti wrote: No menu bar means that gretl couldn't find its UI definition file, gretlmain.xml. This is installed into the "ui" subdir of the top-level gretl directory. When you uninstall gretl in the prescribed way (i.e. running the supplied uninstaller) this normally wipes out all gretl's registry entries. However if you have two separate gretl installs on the same machine, I can imagine that Inno Setup (and the registry) might get a trifle confused and the usual clean-up might go wrong. (The Inno uninstaller is very scrupulous about not touching anything that was not put in place by the corresponding installer.) IMO you did exactly the right thing. Yes, cleaning out the registry manually is a bore, but that will be required only if the user has done something, er, rather silly. Not unrelated: I've just done a major clean-up of gretl's start-up configuration mechanism, removing outdated cruft, trying to avoid unnecessary duplication of effort and to ensure more consistency across platforms (and also to address bug 2843717). But I don't think that would have made any difference in the case you describe. Allin