Hi, 
I'm a phd student of economics in Tunisia who is intersted now with the seasonal unit roots test of Canova and Hansen. So I've installed the package "uroot" in RGUI. I use R 2.4.0. The problem when I apply the function to my data, I've always a message from RConsole that  it is impossible to find the function CH.test. Are there problems as for the use of this package? Please help me.
Thank you in advance.
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