It's well known and covered rather extensively at the SDR# Yahoo group at this point which plugins do and don't work with the latest dev build - the obvious solution is to roll back to the previous build if you have it and keep using it till the issues are resolved.
This is one reason I keep several copies of SDR# around, each one in its own unique folder, never touching different versions, because of such possible occurrences happening (new build release, plugins or whatever get borked, gotta wait for them to be updated hopefully, etc).
Just something to consider I suppose... as for their every being an "all install in one" type script operation I can't see the usefulness of such a thing because not every plugin will be of use to every single user, and with the somewhat sparse "real estate" on the left side of SDR# being rather valuable as it is, having every plugin over there would mean a lot of extra adjustments (opening/closing panels to make room/make visible other panels, etc)