Hi Rick,
I didn't get there yet, at the moment I have problems with running 3dSkullStrip. I get an error that libgsl.so.0 does not exist. But when I run again sudo ln -s /usr/lib/x86_64-linux-gnu/libgsl.so /usr/lib/x86-linux-gnu/libgsl.so.0 (the command that you suggested to solve the R problem) I get the message:
ln: failed to create symbolic link '/usr/lib/x86_64-linux-gnu/libgsl.so.0': File exists
I'm not sure what it means or how to proceed from here. What should I do now?
Many thanks again,
Galit