Official bug submissions is at http://forum.daz3d.com/bugs/view_all_bug_page.php?page_number=1 Highest on my list is of course the vanishing group names (not correctly listed in the bug report; the fact that deleting a named group deletes the group names was, itself, deleted from the bug list). I first reported this shortly after getting Carrara 4.0 -- I may have reported it even earlier, as it was an occasional problem in Carrara 3.0 UV maps restoring to default sphere after tesselation reported and confirmed. UV maps welding across splits reported, file submitted, still marked (as of three months) as "awaiting feedback." Incorrect mapping on cylinder (the wrapped poly across the seam) reported, file and diagrams both submitted, still marked as of six months or so as "awaiting feedback." Crashing in the UV mapper (the dreaded "nil pointer error") reported, marked as "awaiting feedback" (I haven't managed a simple file that shows this problem and nothing else). Some of these may have had movement since I last looked (and my dates are guesswork) but I'm finding it increasingly depressing to visit that bug log.