New Post: exception unhandled in Reading data

Hello
Thank you for the wonderful middle ware R.NET.
I am trying to let R read data
My VB. net code is:
Dim charVec As CharacterVector = engine.CreateCharacterVector(New String() {"low_train.csv"})

          engine.SetSymbol("filename", charVec)
           engine.Evaluate("dataset<-read.table(filename, header=TRUE, sep = ',')")

I got the error
ParseException was unhandled

Any idea how to solve this
Thanks