According to the Silverfast website there is a profile for Ektar (Kodak Professional Ektar 100), perhaps you need to update your software? What version are you using as I can't see any mention of Ektarpress Plus on the current online Silverfast list which applies to Silverfast 8 but there is one for Ekat as mentioned above.
I would be inclined to avoid the Ektarpress Plus profile though as it is from the earlier 1990's Ektar family which were very different films - quite neutral and designed for general picture taking rather than saturated, I have got a scan with a similar profile which looks nothing like a lab scan/print from the negative. If you've got it, try using the 'Kodak 100 UC' (ultra colour) profile which is a similar sort of film to Ektar, nice and saturated.