getField Snippet: undefined function: gettv()

I installed the snippet, and I believe I’m calling it correctly, but I just get a PHP error:

Fatal error: Call to undefined function: gettv() in [omitted]/manager/includes/document.parser.class.inc.php(769) : eval()’d code on line 147

I’m trying to reference TVs from another page like this:

<a href="[[getField?&docid=`1` &field=`frontPromoLink`]]">[[getField?&docid=`1` &field=`frontPromo`]]<a/>

Maybe clear the doc cache or use unchached syntax for the snippet calls? [!!] instead of [[]]

I just made a test with a TV field and it works:
[!getField? &docid=`395` &field=`gigDatum`!]

Using getfield 1.3 (latest avbl. version) + MODx 0.9.6.1p2 (latest stable v.)

thanks!

I had only created the snippet, not uploaded the .php file!