Ok, so things are going pretty smoothly in modding Skyrim, but I've run into a problem:

I'm following this video to install SKYRE:

https://www.youtube....?v=UfR2Sts6jXM?/a>

While Gopher as usual gives a very thorough explanation of how to install the mod, when I get to 21:35 in the video, where the patch is being created, I get an error poppup:

skyproc.exceptions.MissingMaster:

Unofficial Dawnguard Patch.esp has some missing masters:

- Unofficial Skyrim Patch.esp

Please activate and try again.

So what do I need to do? Reinstall the UOSP? Won't that break the other mods I've installed so far?

Well you should be using the Universal Skyrim Legendary Edition Patch (USLEEP) now anyway.

Also IIRC that error is thrown because you are using an outdated Skyproc version.

Ok yeah the Skyproc I was using was outdated, thanks!