On Thu, Mar 3, 2011 at 5:09 AM, Matthias Felleisen <matth...@ccs.neu.edu> wrote: > > On Mar 2, 2011, at 11:15 PM, Drew Hess wrote: > >> Have you tried adding a teachpack that already exists while in Beginner >> mode, prompting the overwrite warning dialog? > > I did like this: > > open new tab in BSL > select add teachpack from Language > select add new teachpack > tried three different ones: > -- 2htdp/batch-io -- failure, due to missing file, window pops up on top of > everything > -- 2htdp/image -- failure, due to missing file, window pops up on top of > everything > -- htdp/dir -- success it just installed it (probably BAD) > > Did I miss something -- Matthias
In my case, when I see the bug (and it's only on occasion, not every time), it's because I've asked DrRacket to install a teachpack that is already installed. Usually the warning dialog asking if I want to overwrite the existing teachpack is displayed on top, but sometimes it's hidden behind the main DrRacket window. It's not clear to me that you tried that case. (If the htdp/dir case prompted you about overwriting an existing version, you didn't mention it.) I don't believe I've ever experienced a case where the failed compile dialog is not visible. I'm fairly certain that it's only been the overwrite warning dialog, and possibly the File->Open dialog in my Bootstrap classes with DrScheme, though I can't recall for certain. I know that whatever dialog box it was that was occasionally occluded in the classroom was not the teachpack "overwrite?" dialog, because students never installed teachpacks. (Sorry, I know that's not particularly helpful, but that's the way these Heisenbugs go.) d _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
