This is by design, *if* you have already used the help in the package. The help database is cached.
I simply don't see you why you believe that you need to save the 200ms 
it takes to start R: you can view the new documentation in a different 
R instance.
On Sat, 16 Jul 2011, Rolf Turner wrote:

I can verify that I get exactly the same error (also R 2.13.1 under Ubuntu).
No idea what to *do* about it, though. :-(

   cheers,

       Rolf Turner

On 16/07/11 11:25, Yihui Xie wrote:
Hi all,

I have noticed this problem ever since R changed its static HTML help
pages to dynamic help pages: when I reinstall a package and try to
view any help page of this package, I always get this error (in the
terminal or html page)

Error in fetch(key) : internal error -3 in R_decompress1

As a package developer, I often have to reinstall a package again and
again, so I wish I do not have to restart R to see the new
documentation. Anybody ever met a similar situation and has an idea?
Thanks!

I use R 2.13.1 under Ubuntu, and it also appears in Windows 7.
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