[R] Problems with make.cdf.package

[Tobias Mueller]

Hi all,

I have some problems with the function 'make.cdf.package'.
I installed the affy package as well as the makecdfenv package.
Then I tried to make an environment by using

R> make.cdf.env(filename)

or resp.

R> make.cdf.package(filename)

Both commands yield the error message:
==============================================
Reading CDF file.
Creating CDF environment
Wait for about 228 
dots...................................................................................................................................................................................................................
Error in make.cdf.package(filename) :
         couldn't find function "createPackage"
==============================================

Does somebody have an idea why this error message occur resp. where I 
can find the function 'createPackage'?

Thanx a lot,
Tobias