Error when trying to run example.

[Christopher Roberts]

I just installed the shiny package and when I try and run the examples ( I am trying to follow the tutorials) I get the following error. 

> runExample("01_hello")

Error in get(name, envir = asNamespace(pkg), inherits = FALSE) " : 

   object '.setDummyField' not found

Any idea on what I've done wrong would be greatly appreciated.

- Chris

[Winston Chang]

Hi, I think this is related to a weird issue where Shiny and/or httpuv were built on R 3.0.1, but is run on R 3.0.0. For a while we had versions of these packages built on R 3.0.1 on our Shiny repository.

If you re-install shiny and httpuv from CRAN and then restart R, I believe that should fix the problem.

-Winston

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[Andrew Clark]

I'm having same problem

httpuv_1.0.6.3 shiny_0.6.0 R version 3.0.0

Just to get this straight. i re-installed both packages and restarted R with no effect

Should upgrading to R3.0.1 solve this?

[Joe Cheng]

It's worrisome that you're still seeing it with those versions, but yes, upgrading to 3.0.1 would likely fix it (my guess).

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[Joe Cheng]

Actually it looks like CRAN builds Windows binaries using 3.0.1. So, yeah, httpuv 1.0.6.3 will not work with R 3.0.0 if installed using the CRAN Windows binaries of httpuv.

[Andrew Clark]

OK. Well I just moved to 3.0.1 and that seems to have solved it thanks

[Gene Leynes]

When I upgraded to Shiny 0.6 it caused errors and Shiny didn't work on any applications (not even the examples).  

Upgrading from R 3.0.0 to R 3.0.1 fixed the errors.

I'm using Windows 7

[Joe Cheng]

This is a general problem with CRAN--they are building Windows binaries on 3.0.1, thus producing packages that are not compatible with 3.0.0 due to some changes in 3.0.1.

[Gene Leynes]

That wouldn't be too surprising, but it seems that the error is with something in Shiny at a higher level than the executable.  

I didn't save the error message, but it was something like "setDummyVariable"

I will say that Shiny 0.6 is much faster and feels more stable.

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[Joe Cheng]

setDummyVariable is what changed in R 3.0.0 vs. R 3.0.1; 3.0.1 has it, 3.0.0 doesn't, and for some reason packages built in 3.0.1 call it.

[Gene Leynes]

Thanks for explaining that. Hopefully it will be helpful to someone else if they search for the error message "setDummyVariable"

I don't think I found a help topic when I searched for it, and it's good to know if I see that cryptic message anywhere else. 

[fung Y.]

i had the same problem before, upgrade R to 3.0.2 can be fixed.

[Thibault Putseys]

the same problem still persists in the latest version of R and latest version of Shiny when you're running

runExample("hello_01")

on a Macintosh. Any help on this?

[Yihui Xie]

Do you mean you see exactly the same error message `object
'.setDummyField' not found`, or a different error message? If it is
the latter, please post the message along with the output of
library(shiny);sessionInfo()

Regards,
Yihui