It looks like user ianmward on the Fantasy Grounds Forums has made a new version of the Shadowrun 4E ruleset layered on CoreRPG. This is definitely the version you will want to be using, as the original version posted here was based on the old Ruleset and is quite broken.
His post can be seen here.
I’ll be asking if he is alright with me hosting the ruleset in FGRepository as well. However, for now, definitely go to that post when looking for his updated Ruleset.