Bernd,
You've come really close, and just missed it by a tiny bit with your $Name1 and $Name keywords. Each keyword needs to be used in its proper context, and by putting $Name1 and $Name inside the $repeatReferencedActors section, the reporting engine is attempting to apply both of those to your actors.
Instead, try this:
$repeatUseCases
$Name
$repeatReferencedActors
$Name
$endrepeatReferencedActors
$endrepeatUseCases
This way, you've got a $Name keyword at each matching level - use cases and actors - and the reporting engine will give you a name on each of those elements.
It gets a little trickier (but can still be done) when trying to match this information up on the same line in an Excel template. Take a look at the attached sample and let me know if this is more like what you're looking for.
Jason