This might be a good time to start a list of wills and won'ts about apps running under OS5 and the Z.
For instance, I've found that the new hi-res OS5 icons are not yet compatible with DBK5 (actually I think it's the other way around). What I found was trying to change icons resulted in a Fatal Alert. Elsewhere I read that the author is going to include some changes in Preview 8 when it comes out to accomodate them..
ITMW I'm using Agendus and Megalauncher 4.1(which is working very well running apps off the MS. I may just put most of my apps on it). If you haven't checked, there is a Cliesource background posted for ML.