I have just purchased an asset pack for Sci Fi Props (Sci fi Props Pack in Props - UE Marketplace) and when the item is brought up within the Marketplace in the launcher, I click “Add to Project” (as I have with other items purchased) and nothing happens. No errors, or hangs or crashes, just nothing happens.
I have contacted the asset developer and hopefully will hear back soon, but just thought I’d check to see if anyone else has faced/resolved this issue.
Cheers
Tim
This looks like a simple assets pack that does not require you to change anything in your project’s setting. Therfor I would suggest going to you vault folder, and copy pasting the .uassets files into your project’s content folder manually.
Please back up your project first just in case.
Oh sorry, I meant that the pack does not download in the first place. Clicking the “Add to project” button does not kick off the download process like normal, so I can’t get the content on my local machine at all.
This looks to be likely an issue with Epic, as the author got back to me saying as much.
Could Epic please get onto this issue and sort it out? The asset pack looks great and I’d like to be able to use it in my project.
Cheers
Tim
This issue has now been resolved. Epic got back to the author and fixed the asset on their end. Just in time for 4.14. 
I have that same problem with Urban Trash Pack Vol 1 that i just purchased. Trying to add to project, it should start the content download, but does nothing.