[zarlor]

If you're getting those errors that would explain why you're not seeing anything else you've downloaded. Since I have every single official data file (including WWII, which is one of the ones I made) and all of dartnet's files (and a few others) as well and they all play together just fine (so none of the errors you are seeing) then I would probably guess that those errors are telling you about problems in your "Pulp" data file. Oftentimes the problem is just that you made a "UniqueID" the same as what exists in something else.

My usual tip for UniqueIDs, and the one used for official settings, is to use a 2-letter identifier in them using the same format otherwise used. For example, let's say you have an Edge called "First Stringer" and you tried to give it a UniqueID of edgFirstStri, but maybe that throws an error because the official edge of First Strike already uses that UniqueID (I don't think it does, actually, but this is just an example). In that case if you called your source "Pulp" maybe use a UniqueID of something like "Pu" and change the UniqueID to edgPuFirStr, or something like that. Capitalization is important here as Hero Lab does think that something like edgMyEdge is distinctly different from edgmyedge. You might still run into issues if you're not sure of all the two-letter identifiers in use (so let's say there were already an existing setting called Pulp Fiction and someone used PF for their 2-letter code then if you wanted to use PF for your Purple Fantasy setting you'd still have to consider watching out for overlaps, but overall using a two-letter code can greatly help making sure your UniqueIDs are, in fact, unique.

That would be my first guess so check through those errors and see if they can tell you what things have problems and try to fix those. If you run into things you can't figure out how to fix, though, give us the actual error and I'm many of the folks here will be happy to try and help you figure out the specific problem.