I encountered the same problem a couple of days ago. I found simply
re-installing JASA (the 64bit one) would straighten out the Registry
entries:
http://java.com/en/download/manual.jsp


=============================
Xiaogang Su, Ph.D.
Associate Professor
Department of Mathematical Sciences
University of Texas at El Paso
500 W. University Ave.
El Paso, Texas 79968-0514
xsu@utep.edu
xiaogangsu@gmail.com
https://sites.google.com/site/xgsu00/


On Sun, Dec 8, 2013 at 11:15 AM, Tolga Uzuner <tolga.uzuner@gmail.com>wrote:

> Thank you Rob. I used to have the 64-bit R also installed, but removed it
> and did not reinstall it. I also cleared out all rJava.dll files on my
> computer before reinstalling R fresh. I am running R through Rgui,  not
> Rstudio. I will post RVersion data later once I return to my PC, apologies.
>
> Sent from my iPhone
>
> > On 8 Dec 2013, at 12:50 pm, Robert Baer <rbaer@atsu.edu> wrote:
> >
> > You don't really provide enough information like
> > R.Version()
> >
> > but my guess is that you are running 64-bit R either directly or through
> R Studio but that you have only 32-bit Java installed.   I am doing fine on
> Windows with Java 7 update 45 but had some 64-bit run issues with only Java
> 7 update 40 64-bit JDK.
> >
> > HTH,
> > Rob
> >
> >
> >> On 12/8/2013 8:03 AM, Tolga Uzuner wrote:
> >> Dear R Users
> >> Have run into a problem with the rJava package recently. I do not seem
> to be able to load the package. I am on R 3.0.2 and updated the rJava
> package this morning from the Pennsylvania mirrors. I get the following
> error:
> >>
> >> ----
> >> package ‘mnormt’ successfully unpacked and MD5 sums checked
> >> package ‘rJava’ successfully unpacked and MD5 sums checked
> >>
> >> The downloaded binary packages are in
> >> C:\Users\t_uzu_000\AppData\Local\Temp\RtmpOC9zec\downloaded_packages
> >> > library(rJava)
> >> Error in get(Info[i, 1], envir = env) :
> >> cannot allocate memory block of size 2.8 Gb
> >> Error: package or namespace load failed for ‘rJava’
> >> >
> >> ----
> >>
> >> Any pointers ?
> >>
> >> Thanks in advance
> >>
> >> ______________________________________________
> >> R-help@r-project.org mailing list
> >> https://stat.ethz.ch/mailman/listinfo/r-help
> >> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> >> and provide commented, minimal, self-contained, reproducible code.
> >
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

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