I'd like to know whether it's a bug or feature that SQL Dev complains about the "The Connection Name may contain only alphanumeric characters...".
All my previously defined conn.descriptors (names) have a lot of "spec. chars" in then (ie. the IP of the server), and they've been imported successfully after installing the latest patch, but since then every time I try to rename one of them or make a new one using my former naming scheme, I get the error.
My env. is Win7 (x64), Java(TM) 1.7.0_05, SQL Dev 3.2.10.09.57.
Your IP addressed connection names should work again, assuming it looks like X.X.X.X or similar. If the connection name is valid for your file system file and directory names, it will now work in 3.2.2.
3.2.2 is live as of late last night.