are you using the latest vers of SU2KT ? i think its at 3.1 right now, you can get it from the kerkythea website. As far as the file not coming up correctly I would encourage you to post in the kerkythea forum, under the sketchup section, that way you can post images of you problem and get a good walk through from the more experienced users. also I would highly reccomend you read entirely through the getting started manual thats provided on
[link] you also have a manual developed for architectual rendings as well which I found quite useful. if you have any other questions let me know. but the majority of the time you'll get an amazing amount of support and feedback in the kerkythea forums.
-Johnny