What are the default settings that come with Lightroom 5 to export photos? I changed mine and dont remember what the original were to get them back?
There are defaults for DNG and full-size jpg's as well as for e-mail.
Why don't you just create a new one that fits your needs?
In addition: Go to Edit / Preferences / Presets and hit Restore Export Presets to get back what came with LR.
Retrieving data ...