Duping Help

I duped successfully before release of 123.4.4
Ever since the update, duping has been a failure.
I use the standalone clients for correct duping, work with the hanging between vault and nexus...etc.

Could somebody give me a detailed tutorial on duping.
Correctly and efficiently.
Thank you kindly.

I know how you feel, I've been duping and then, not to long ago, it just stopped working and I haven't been able to get it since. Alas, I doubt anyone can help anymore than they already have. They are several guides on it already; the most they could do is just dupe for us, but I doubt anyone would be that generous with their time. xD

I have just gotten two successful dupes in EUWest (no other servers seem to be working with it) by doing alt+f4 right as it says "Connected!" and not just "Connecting to...", so this might be the case. Try heading to EUWest and doing some duping.