At [URL="http://www.prodesktop.net"]www.prodesktop.net[/URL] there is a download for Pro Desktop Express (Service Pack 1) which apparently resolves a long standing problem with PDEx v8.0 Actually, I'm new here so I'm not familiar with the problem that has caused "so much grief" according to the comment on the [URL="http://www.prodesktop"]www.prodesktop[/URL] home page - could someone give me a quick resume of what it was Can someone confirm that this works. Anyone installed this successfully yet - does it do the trick? I downloaded the Pro/D Express program from [URL="http://www.ptc.com"]www.ptc.com[/URL] a couple of weeks ago now - can I assume that this is NOT the 'fixed' version - is there an easy way to check - is the only remedy to download the whole 33Mb file - I take it there's no 'patch' available from ptc. If I install the new version (SP1) will I need a new activation key? I'm enjoying my evaluation of Pro/D X but being new to 3D modelling I must say I don't find it particularly intuitive. However, the tutorials referred to in this group and elsewhere have been a great help. Thanks in advance.