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Hi everyone,

I am new to Maple, and require the use of grtensorii in my research. The package is installed correctly and will open fine, but it has troubles in finding the metric files to use. When I try to qload the metric I want I get the error message:

Error, (in qload) Could not find metric perturbed.

I have spoken to some colleagues who ran into similar issues making grtensor compatible with Maple 15, and they ran the commands

unprotect(sqrt);

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
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