Thanks for the update first! So you just copied over the files and restored yer settings, design and indivual functions and stuff and that was it? Hopefully, i?m giving it a try now ;)
I usually use the svn version, to get the latest updates :-)
Jut overwrite 3.0.1 files with 3.0.2 and clear the cache ( to be shure ).
But first, make a backup of files and data (pg_dump or mysqldump), something could not work like previewed :-( BTW, don't overwrite your design files , and own configurations.