[BioC] Error with read.maimages

[lapereir at uc.cl]

Dear list

I am getting a couple of erros when trying to  import gpr files using the
read.maimages of Limma.

> targets<-readTargets("targets.txt")
> RG <- read.maimages(targets, source="genepix", wt.fun=f)
Error in gsub("\\.", "\\\\.", x) :
input string 1 is invalid in this locale

I search in R Help for the function of gsub, but i cannot fix the error that
give me, so that i cant import any genepix (.gpr) files.

Thank
Luis