phew, what a performance.....
because of issues of LHC not liking boinc v.6.x.x, I left off moving from v.5 to v.6 until the issues of not running v.6 with cpdn became the overriding factor.
so after discovering that it won't install to run data the old way, I saw this thread and waited till a climate model finished and I cleared out all my cache and got ready to install. because I like to backup cpdn occasionally I choose to install data in directory /boinc/data/ to make things easier rather than the horrid XP default docs&sets/applications/data/. I rather assumed (or hoped) that installation would sort all the files into their rightful place...
huh! some hope... ...so I moved the project folder into the new data space and the other two folders and still no joy. I could see the clientstate.xml files and the rest of the other stuff like that was still sitting in the root BOINC folder, so I made a safety copy of the new empty clientstate.xml and couple of handfuls of files in the new project folder and replaced them with the matching ones from the old /boinc/ folder and then also copied over ALL the rest of the .xml and .txt files into the new project folder. That did the trick!!
I write this up in case it helps anyone else; but should it have been this much bother??? I'm sure not. My tecchie knowledge is only just enough to scrape me over the hurdle; anyone with less know-how would have struggled.
I don't know but if you lose all the history in the .xml and .log files from each project should you choose the default data location, does this matter much or is it recreated as the client handshakes afresh with each project and BAM! ?
cheers /pg