Hi Mark thanks for responding - I was beginning to think that no one loved me! ;-) The top - with TransPoser - imports into the wrong position (too low - 50% below 'ground') and Carrara becomes unresponsive and dies in less than 15 seconds... This is with both a new (empty) document or one that includes other imports. With the native importer, the top never completely imports - at the moment you would expect the top to appear, the document window clears and Carrara dies... I tried resetting Carrara preferences - no difference. I beginning to suspect that I should give the problem to Daz Support and use another product... Garry