When uploading files to the Resources tool, if you choose to upload multiple files (you can choose to upload up to 10 at once), if you don't upload as many files as you specified, you get an error message and are asked to enter titles for any files you did not specify.
1. Add items in Resources
2. Leave it on the default of Files
3. Choose "10" from the pop-up menu
4. Specify 8 files on your hard drive
5. Click on Add
It should just accept that you only wanted to upload 8 files without making you go back to the pop-up menu.