Error in AutoCAD Mechanical 2007: no part found in actual standard system settings

Dear All,

I would really appreciate if anybody could help me on the following issue:

The following message appears in AutoCAD Mechanical 2007 when trying to open
the standard parts database and to insert a standard part into any drawing:

"no part found in actual standard system settings! Please switch on
additional standards. (menu: Assist>Options>AM: Standard Parts)".

But when going to the above AM: Standard parts options menu, the Available
standard and the Selected Standard lists are both empty.

I've tried a couple of times to reinstall the standards and the whole
package as well but nothing. I log in as Administrator and I've also tried
to give Power User privileges in my account in order to eliminate the
problem.

But still nothing, I don't have standard parts in AutoCAD Mechanical 2007.


Thanks in advance,

John.