[BioC] error when loading mzR

Dan Tenenbaum dtenenba at fhcrc.org
Thu Aug 1 02:34:26 CEST 2013

On Wed, Jul 31, 2013 at 4:39 PM, Steve Lianoglou
<lianoglou.steve at gene.com> wrote:
> Hi,
> On Wed, Jul 31, 2013 at 4:28 PM, Monika Lukaszewska [guest]
> <guest at bioconductor.org> wrote:
>> To whom it may concern:
>> Here I get this error when I open new R session:
>> "During startup - Warning messages:
>> 1: In fun(libname, pkgname) :
>>    mzR has been built against a different Rcpp version
>>  than is installed on your system. This might lead to errors
>>  when loading mzR. If you encounter such issues, please send
>>  a report, including the output of sessionInfo() to the Bioc
>>  mailing list -- http://www.bioconductor.org/help/mailing-list.
>> 2: Class "C++Object" is defined (with package slot ‘Rcpp’) but no metadata object found to revise subclass information---not exported?  Making a copy in package ‘.GlobalEnv’"
>> I have installed xcms and metaXCMS packages but I encounter several errors when I try to run metaXCMS.
>> I installed/uninstall R several times. IS there a way of fixing mzR/Rcpp problem?
> You're installing an old(er) version of R (2.15.3), please install the
> latest version of R (3.0.1) and then reinstall your packages using
> biocLite.
> There was some chatter about mzR and Rcpp inconsistencies some time
> ago, which maybe what is biting you now, and I believe has since been
> resolved. The upgrade to R 3.0.1 will likely be all you need.
> You'll also get the added bonus of using the latest and greatest (and
> supported) versions of the Bionconductor packages you will be using
> for your analysis.

And when you're done with all that, make sure you have Rcpp 0.10.4 installed.

> HTH,
> -steve
> --
> Steve Lianoglou
> Computational Biologist
> Bioinformatics and Computational Biology
> Genentech
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