Run this command $ sudo apt-get install libjpeg62
On 04/09/2012 04:36 PM, Jackson Lawler wrote: > I was using DrRacket for a class using PLAI on Ubuntu 11.10 with some issues > before the complete failure in 12.04 Beta 2. > It was very slow when it came to scrolling with my trackpoint, but moving > aroung with the keyboard only or with an external mouse with a wheel moved > slowly, but didn't freeze DrRacket for many seconds and then move a whole lot > like it did with the trackpoint. I'm not sure if that was some kind a > precursor to the trouble I am having now. I believe some of that problem > came about because of Ubuntu's new Unity interface. > > When I installed changed to the 12.04 Beta 2 of Ubuntu, I tried to install > the DrRacket version available in the Ubuntu Software Center that was working > on 11.10. It installed, but then would not run. I then tried toi install > the follwing versions from the website: debian_squeeze x86_64, fedora 14 > x86_64, ubuntu karmic i386. Those did not work either. Finally, I resorted > to compiling the Unix source myself, which also failed. > > I don't know if you all can help me with this or if this is something I need > to contact Canonical about, but any suggestions are very welcome. > > I know this might be because I am using a Beta version, but since the full > version comes out in 18 days I had hoped that it would still be fairly > stable. For the most part, it is quite stable. > I would have waited until the final release came out before emailing you all > about this, but since I need it for class, I decided to send this now. > > The error would occur whenever I tried to run drracket in the terminal. > After every installation (I did uninstall the each previous attempt before > trying again with a different version) I would do this: > > jack@jack-ThinkPad-W520:~$ drracket > > The result was always: > > ffi-lib: couldn't open "libjpeg.so.62" (libjpeg.so.62: cannot open shared > object file: No such file or directory) > > === context === > /usr/lib/racket/collects/racket/draw/unsafe/jpeg.rkt: [running body] > /usr/lib/racket/collects/racket/draw/private/bitmap.rkt: [traversing imports] > /usr/lib/racket/collects/racket/draw/private/dc.rkt: [traversing imports] > /usr/lib/racket/collects/racket/draw/private/svg-dc.rkt: [traversing imports] > /usr/lib/racket/collects/racket/draw.rkt: [traversing imports] > /usr/lib/racket/collects/mred/private/kernel.rkt: [traversing imports] > /usr/lib/racket/collects/mred/private/const.rkt: [traversing imports] > /usr/lib/racket/collects/mred/private/check.rkt: [traversing imports] > /usr/lib/racket/collects/mred/private/mred.rkt: [traversing imports] > /usr/lib/racket/collects/mred/mred.rkt: [traversing imports] > /usr/lib/racket/collects/mred/main.rkt: [traversing imports] > /usr/lib/racket/collects/racket/gui/base.rkt: [traversing imports] > /usr/lib/racket/collects/drracket/drracket.rkt: [traversing imports] > > How can I fix this? > > Running 'racket" from the terminal works just fine, so I know the > installation was at least partially successful. > I can use another editor (GVim, nano, Vi, Emacs) or the like, but right now, > I really don't want to learn a new editor in the midst of a class. > > I do not, in any manner, intend to accuse anyone of anything in this e-mail; > I just need help. > > Any and all help, again, would be greatly appreciated. > > > ____________________ > Racket Users list: > http://lists.racket-lang.org/users
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