Question: A error! When installing GRTensorII in Maple13 (Ubuntu12.04)~

I have install Maple13 and GRTensorII on my PC (Ubuntu12.04) ~ but GRTensor dosent work ! When i start Maple13 ,there are the words "Error, "/home/herb/.mapleinit" is an empty file". 

Is anybody can help me out of it? I really have done the following in README:

3. Go to the INSTALLDIR. In this directory you will find a file called
mapleinit.sample. This is a Maple configuration script which has
been configured automatically based on the value you specified as
the installation directory. Copy the contents of this file to the
file .mapleinit in your home directory.
Thank a lot!!!!
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