Problems with playwith()

Hello,
I am trying to execute an example provided in the help files for the 
playwith() function. I try to execute the first example:

library(playwith)
if (interactive()) {
options(device.ask.default = FALSE)

## Scatterplot (Lattice graphics).
## Labels are taken from rownames of data.
## Just click on the plot to identify points.
playwith(xyplot(Income ~ log(Population / Area),
   data = data.frame(state.x77), groups = state.region,
   type = c("p", "smooth"), span = 1, auto.key = TRUE,
   ylab = "Income per capita, 1974"))
}

I get many errors regarded with GLib, and finally it says that the 
runtime environment asks to close the application in an appropiate way. 
Any idea on how to solve thi? I have all packages installed. I use R 
2.7.2 and GTK+ 2.12.9. I have all the required packages installed.
Best,

Dani

Daniel Valverde Saub?

Grup de Biologia Molecular de Llevats
Facultat de Veterin?ria de la Universitat Aut?noma de Barcelona
Edifici V, Campus UAB
08193 Cerdanyola del Vall?s- SPAIN

Centro de Investigaci?n Biom?dica en Red
en Bioingenier?a, Biomateriales y
Nanomedicina (CIBER-BBN)

Grup d'Aplicacions Biom?diques de la RMN
Facultat de Bioci?ncies
Universitat Aut?noma de Barcelona
Edifici Cs, Campus UAB
08193 Cerdanyola del Vall?s- SPAIN
+34 93 5814126