[BioC] Graphviz in Vista64

[Sim, Fraser]

Hi Bioconductors,

Has anyone successfully used the Rgraphviz package to plot graphs in R
under Vista64??

I have found that RGUI.EXE crashes upon execution of the layoutGraph
step. 

Running the following reliably crashes R.

library("Rgraphviz")
g = new("graphNEL", nodes = c("a","b","c"))
debug(Rgraphviz:::graphLayout)
sessionInfo()
layoutGraph(g)

Thanks,
Fraser

PS. The crash occurs in :

Rgraphviz:::graphLayout
.Call("Rgraphviz_doLayout",graph,as.integer(type),PACKAGE="Rgraphviz")

PPS. 
sessionInfo()

R version 2.8.1 (2008-12-22) 
i386-pc-mingw32 

locale:
LC_COLLATE=English_United States.1252;LC_CTYPE=English_United
States.1252;LC_MONETARY=English_United
States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252

attached base packages:
[1] grid      stats     graphics  grDevices utils     datasets  methods

[8] base     

other attached packages:
[1] Rgraphviz_1.20.3 graph_1.20.0     rcom_2.0-4       rscproxy_1.0-12 

loaded via a namespace (and not attached):
[1] cluster_1.11.12 tools_2.8.1