[BioC] affycoretools()

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The legend is not plotting for the 3d PCA plot in affycoretools(). From the documentation it says the legend boolean defaults to TRUE, but no legend prints even after I explicitly set the legend boolean to TRUE.

Any suggestions on getting the legend to print?

I have installed and loaded rgl().

Also, the addtext parameter is not working either. It does not add the sample names as I have specified.

Here is my command:

plotPCA(expset, pcs=c(1,2,3), plot3d=TRUE, addtext=sampleNames(eset), group = eset$GroupNumber, groupnames=levels(treatment.factors), legend=TRUE)


 -- output of sessionInfo(): 

> sessionInfo()
R version 2.15.1 (2012-06-22)
Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit)

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

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

other attached packages:
 [1] rgl_0.92.894                         affycoretools_1.30.0                 KEGG.db_2.8.0                       
 [4] GO.db_2.8.0                          gplots_2.11.0                        MASS_7.3-22                         
 [7] KernSmooth_2.23-8                    caTools_1.13                         bitops_1.0-4.2                      
[10] gdata_2.12.0                         gtools_2.7.0                         VennDiagram_1.5.1                   
[13] hugene10sttranscriptcluster.db_8.0.1 org.Hs.eg.db_2.8.0                   BiocInstaller_1.8.3                 
[16] mogene10sttranscriptcluster.db_8.0.1 org.Mm.eg.db_2.8.0                   RSQLite_0.11.2                      
[19] DBI_0.2-5                            limma_3.14.1                         hugene10stv1cdf_2.11.0              
[22] AnnotationDbi_1.20.3                 affy_1.36.0                          Biobase_2.18.0                      
[25] BiocGenerics_0.4.0                  

loaded via a namespace (and not attached):
 [1] affyio_1.26.0         annaffy_1.30.0        annotate_1.36.0       AnnotationForge_1.0.2 biomaRt_2.14.0       
 [6] Biostrings_2.26.2     Category_2.24.0       gcrma_2.30.0          genefilter_1.40.0     GOstats_2.24.0       
[11] graph_1.36.1          GSEABase_1.20.0       IRanges_1.16.4        lattice_0.20-10       parallel_2.15.1      
[16] preprocessCore_1.20.0 RBGL_1.34.0           RCurl_1.95-3          splines_2.15.1        stats4_2.15.1        
[21] survival_2.36-14      tools_2.15.1          XML_3.95-0.1          xtable_1.7-0          zlibbioc_1.4.0       
> 

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