R help - Jul 2015 - R load error

Greetings - I'm using RStudio and recently updated both it and R. When
loadings up, I'm now receiving the following error:

Error: ReadItem: unknown type 63, perhaps written by later version of R

I've tried using rm(list=ls())   rm(list=ls(all.names=TRUE)) and detach()
but nothing works in R. Within RStudio it just continues to try and load and
I'm unable to interrupt or restart. Any ideas would be greatly appreciated.

Yaacov Petscher, Ph.D.
Associate Director, Florida Center for Reading Research
Senior Research Associate, Regional Educational Laboratory-Southeast (REL-SE) at
Florida State University
2010 Levy Ave
Suite 100
Tallahassee, Florida, 32310
850-645-8963 (p)
850-644-9085 (f)
http://www.fcrr.org/for-researchers/petscher2.asp



	[[alternative HTML version deleted]]

On 27/07/2015 3:03 PM, Yaacov Petscher wrote:
> Greetings - I'm using RStudio and recently updated both it and R. When
loadings up, I'm now receiving the following error:
> 
> Error: ReadItem: unknown type 63, perhaps written by later version of R
> 
> I've tried using rm(list=ls())   rm(list=ls(all.names=TRUE)) and
detach() but nothing works in R. Within RStudio it just continues to try and
load and I'm unable to interrupt or restart. Any ideas would be greatly
appreciated.
For the RStudio error (retrying ad infinitum), you should report the
problem to them.  This list is just for R.

The likely cause of that error in R is a corrupted file.  That might be
.Rdata, or whatever file you're trying to load or read.

Duncan Murdoch

Try restarting R-Studio. I have found that every once in a while it seems to do
something squirrelly but I have never isolated the problem enough to do a
report.

Otherwise,perhaps run R in a terminal and see if it will load the data from
there to  check if the file is actually okay.

John Kane
Kingston ON Canada

> -----Original Message-----
> From: ypetscher at fcrr.org
> Sent: Mon, 27 Jul 2015 15:03:52 -0400
> To: r-help at r-project.org
> Subject: [R] R load error
> 
> Greetings - I'm using RStudio and recently updated both it and R. When
> loadings up, I'm now receiving the following error:
> 
> Error: ReadItem: unknown type 63, perhaps written by later version of R
> 
> I've tried using rm(list=ls())   rm(list=ls(all.names=TRUE)) and
detach()
> but nothing works in R. Within RStudio it just continues to try and load
> and I'm unable to interrupt or restart. Any ideas would be greatly
> appreciated.
> 
> Yaacov Petscher, Ph.D.
> Associate Director, Florida Center for Reading Research
> Senior Research Associate, Regional Educational Laboratory-Southeast
> (REL-SE) at Florida State University
> 2010 Levy Ave
> Suite 100
> Tallahassee, Florida, 32310
> 850-645-8963 (p)
> 850-644-9085 (f)
> http://www.fcrr.org/for-researchers/petscher2.asp
> 
> 
> 
> 	[[alternative HTML version deleted]]
> 
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> 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.
____________________________________________________________
FREE ONLINE PHOTOSHARING - Share your photos online with your friends and
family!
Visit http://www.inbox.com/photosharing to find out more!