Cloning Accounts

[Pedro Albuquerque]

Hi,
my name is Pedro and this my first post. I'm not an accountant, just a
guy trying to set his finances straight! :-)

I started using GnuCash quite recently and just finished creating a
basic account hierarchy, in which there is a top expense account called
"Vehicles".
The idea is to create a sub-account for each vehicle, with it's
corresponding categories of expenses.
Once this is done, is there a way to clone that sub-account to use with
a different vehicle? Or any other asset, anyway?

Another question, I'm getting this error. It happens on menu Reports ->
first option (?Assets & Liabilities?) -> third option from bottom
(?Accounts Hierarchy?).
Sorry, but I'm not sure of the exact terms in English, and the software
is only partially translated.
What am I doing wrong here?

I used a Dropbox link because I don't know if this list strips
attachments. Thank you in advance for any help.

Regards,
Pedro. 
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