[BioC] read.maimage error message

[Kathy [guest]]

I get the error \"Error in readGenericHeader(fullname, columns = columns) : 
  Specified column headings not found in file
In addition: Warning message:
In file(file, \"r\") :
  file(\"\") only supports open = \"w+\" and open = \"w+b\": using the former\" when I use RG <- read.maimages(targets$FileName, source=\"agilent\", annotation= c(\"FeatureNum\", \"Row\", \"Col\",\"ProbeUID\", \"ControlType\",\"ProbeName\", \"GeneName\", \"SystematicName\")). 
Then I used RG <- read.maimages(targets, source=\"agilent\"), I got the same error as the former one, which is Error is readGenericHeader(fullname, columns = columns) : 
  Specified column headings not found in file
In addition: Warning message:
In file(file, \"r\") :
  file(\"\") only supports open = \"w+\" and open = \"w+b\": using the former

Thanks for your help!

Kathy



 -- output of sessionInfo(): 

readGenericHeader(fullname, columns = columns) : 
  Specified column headings not found in file
In addition: Warning message:
In file(file, \"r\") :
  file(\"\") only supports open = \"w+\" and open = \"w+b\": using the former

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