sorry that my first post is a bug report - actually this reflects the fact I've been getting on very nicely with avenue and arena 4 on 2 projects so far

we've been running arena/avenue 4.01 and 4.1beta (now 4.1 release

some stability issues so upgraded to latest catalyst 12.6 and now advanced or fullscreen output doesn't work at all - immediate crazy strobing on all displays.
windowed display is fine, even at the full resolution of the desktop.
all machines are win7/64, min 12gb RAM, ati cards 6700 and above.
projects are from 2048x1080 up to 3328x768 (=(2x1024)+1280)
- for one big mapping project I need to use IRMapio on the composition and keystone the whole display using advanced....
I can back-grade the ATI driver but arena was less stable with the old driver.
any help gratefully received!
cheers
Mark
ps this is last year's finale show at Camp Bestival, played out in avenue 332
- this year's is in 3 weeks, that's what we're working on!
http://www.youtube.com/watch?v=rECcn_wSFfk