There was no reason to upgrade to Snow Leopard. It is really only for FCS3 (ie FCP 7 onwards. The advice constantly offered here at the COW is to do a clean install of a new OS on a new drive, keeping the old as a backup. Installing an OS upgrade over an older OS is not recommended for FCS users.
FCP 6.0.1 was early version 6 and buggy. You might need to be on a later version. FCP 6.0.6 was the last and stable versions of FCP 6.
Once on the later version, FCP’s log and transfer should work, but I have no real experience with Log & Transfer & the EX 1 so the opinions of others who work with this format may help.