RExpression accepts only limited input size.
The R expression actor accepts only a very limited size of input. For example,
a vector x <- 1:20000 with 20000 elements cannot be in the input.
It was mentioned that it is planed to implement a TCP/IP binding to the R platform.
Maybe this binding does not have such limitation.
The bug is severe for the bioinformatics/microarray community. Here, dataframes
and tables of very large dimensions are handled.