These are the exact same stairs with the exact same custom made physics and the exact same house as the one I sell in Second Life. There are no problem with the stairs in SL but in Kitely they work for a bit i.e. an avatar can walk up them and the next minute they can't. I uploaded the stairs to Kitely and added the custom physics, I then uploaded it with both 'analysed' physics and with the physics just added. In both cases the stairs are workable up to about 3/4s of the way up and then are un-navigable. Sometimes they work ok but mostly they don't. The house is exactly the same as the SL house so I can't see any problems there either. I've checked all objects around it to make sure that there is nothing getting in the way and there isn't.
Any help would be appreciated as at this rate I won't be able to add anything to my Kitely marketplace store and one cottage is almost ready apart from the knackered stairs.

Thanks for any advice...
The Cottage In Question
