Hi list, It's important to understand better this Patch update topic agreed? I just visit the www.cakewalk.com Sonar 8.5 support website. Regarding updates, i finded the folowing: SONAR 8.5.3 AudioSnap Update SONAR 8.5.2 Update V-Studio 100 Control Surface Installer (x64 and x86) SONAR Web Trial SONAR Producer 8.5.1 Matrix View Update EUCON Control Surface Plug-in For me it seems that this patches are obviously updated, since 2 years ago only appeared something like; 8.5.2 and 8.5.3 patches. Now! my curiosity goes for the SONAR Producer 8.5.1 Matrix View Update Never saw this one! I supposed that i dont need this patch since i work very well with Matrix view feature. The other patches name are diferent though! Anyway, Cake talking setup instaled perfectly with those 8.5.2 and 8.5.3 patches. Once again, with me was two years ago. I will gonna write un e-mail to dancingdots support just to know their recommendations.. regards, Rui Vilarinho