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Run this command<br>
<br>
$ sudo apt-get install libjpeg62<br>
<br>
On 04/09/2012 04:36 PM, Jackson Lawler wrote:
<blockquote
cite="mid:CALwd4HwtsgjN7S8xw0rCa5LxL_mNsmdC-mc71sHvvyVWbntSMg@mail.gmail.com"
type="cite">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.
<div>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.</div>
<div><br>
</div>
<div>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.</div>
<div><br>
</div>
<div>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.</div>
<div><br>
</div>
<div>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.</div>
<div>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.</div>
<div><br>
<div>The error would occur whenever I tried to run drracket in
the terminal.</div>
<div>After every installation (I did uninstall the each previous
attempt before trying again with a different version) I would
do this:</div>
<div><br>
</div>
<div>
<div>jack@jack-ThinkPad-W520:~$ drracket</div>
<div><br>
</div>
<div>The result was always:</div>
<div><br>
</div>
<div>ffi-lib: couldn't open "libjpeg.so.62" (libjpeg.so.62:
cannot open shared object file: No such file or directory)</div>
<div><br>
</div>
<div> === context ===</div>
<div>/usr/lib/racket/collects/racket/draw/unsafe/jpeg.rkt:
[running body]</div>
<div>/usr/lib/racket/collects/racket/draw/private/bitmap.rkt:
[traversing imports]</div>
<div>/usr/lib/racket/collects/racket/draw/private/dc.rkt:
[traversing imports]</div>
<div>/usr/lib/racket/collects/racket/draw/private/svg-dc.rkt:
[traversing imports]</div>
<div>/usr/lib/racket/collects/racket/draw.rkt: [traversing
imports]</div>
<div>/usr/lib/racket/collects/mred/private/kernel.rkt:
[traversing imports]</div>
<div>/usr/lib/racket/collects/mred/private/const.rkt:
[traversing imports]</div>
<div>/usr/lib/racket/collects/mred/private/check.rkt:
[traversing imports]</div>
<div>/usr/lib/racket/collects/mred/private/mred.rkt:
[traversing imports]</div>
<div>/usr/lib/racket/collects/mred/mred.rkt: [traversing
imports]</div>
<div>/usr/lib/racket/collects/mred/main.rkt: [traversing
imports]</div>
<div>/usr/lib/racket/collects/racket/gui/base.rkt: [traversing
imports]</div>
<div>
/usr/lib/racket/collects/drracket/drracket.rkt: [traversing
imports]</div>
</div>
<div><br>
</div>
<div>How can I fix this?</div>
</div>
<div><br>
</div>
<div>Running 'racket" from the terminal works just fine, so I know
the installation was at least partially successful.</div>
<div>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.</div>
<div><br>
</div>
<div>I do not, in any manner, intend to accuse anyone of anything
in this e-mail; I just need help.</div>
<div><br>
</div>
<div>Any and all help, again, would be greatly appreciated.</div>
<br>
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</blockquote>
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