Installing 3rd party product with DIM
I'm trying to install a product from a third party site using DIM (specifically, "G3R Modern Billboard Pack 9" by G3 Renderworks). The zip file includes a Content subfolder, and XML files called Manifest and Supplement. I usually install third party content using RiverSoftArt's Content Wizard, but I have read that those XML files are for DIM and should allow it to be installed complete with Smart Content. The instructions I've read said to put the zip file in the DIM's Package Archive directory, which for me is C:\Users\Public\Documents\DAZ 3D\InstallManager\Downloads and click the refresh button in DIM so it appears in the Ready To Install tab, but when I do that nothing happens.I've tried extracting and re-zipping (since that sometimes fixes Content Wizard issues) but no dice. What am I doing wrong?

Comments
Can't you just install it manually by copying and pasting the folders into your library directly?
It may be a configuration issue in the zip, %appdata%/daz 3d/installmanager/log.txt should open the log if you paste it into a file browser address bar, scroll down to the end after having done the refresh and see if there are any messages relating to the zip.
Of course, but that wouldn't install the Smart Content
Nothing relating to the zip AFAICT
I've actually got 8 zips in there to install (I got 2 bundles of billboards) and none of them are mentioned. The only things that look like error messages are Remote Name Collisions, but those all name things I installed from the Daz store, and there's 10 of them
The remote name collisions are from files that have multiple parts and/or identical names, but don't have anything to distinguish them, like 1of2, 2of2, or (01 of 02), (02 of 02), etc.
Yeah I didn't think they were related, but I figured I should at least mention them since they were the only error-like messages showing up in the log
I did some test with one of their freebie: the problem is how the archive is named.
The file I downloaded is named 'g3r stun gun for genesis 8 and genesis 9.zip' and which is not the kind of name DIM will be looking for:
https://docs.daz3d.com/public/software/install_manager/referenceguide/tech_articles/package_naming/start
I don't know if it's a naming mistake by G3 Renderworks or if Renderhub is not respecting how the archive was originally named (I suppose it's the later but you'll have to ask one of them to know), but once I renamed it following DIM naming convention, the stun gun did appear in DIM.
Try renaming your archive to something like G3R00000001-01_G3RModernBillboardPack9.zip
You can pick any value you like for the 8 number after G3R: Renderhub don't use unique ID to identify their product like Daz or Renderosity are doing it. You can also use something else than G3R, as long as it's 5 letters or less and is not one the five combination reserved by Daz3D to itself (it should work even if you're using one of them, but it could lead to some conflict, so best to avoid them).
And for the last part of the archive name (G3RModernBillboardPack9), I simply removed any space.
If it is installed properly you can manually import the metadata
It works! Huzzah!
Thank you!