[BioC] problem deriving expression values

[Salil]

Hi Group,
 
In order to get expression values from raw data intensities Iam giving
the command,
 
affy.es <- expresso(abatch,bgcorrect.method =
"rma2",normalize.method="qspline",pmcorrect.method="pmonly",summary.meth
od="liwong")
 
but Iam getting the error:
 
background correcting...Error: cannot allocate vector of size 625759 Kb.
 
 
What should I do in this case?
 
Thanks

	[[alternative HTML version deleted]]