Lightroom Classic: I cannot export my edited DNG images as full sized JPG..???

Greetings Mark, 

I would be curious to see if you attempt the same Export to your local drive instead of the USB drive if it has an effect on your success? 

If not, then you should respond with your installed Lightroom version number: (Help>System Info...) and information about the port type, size of thumbdrive, free space - etc. 

Thank you Rikk,

I'll give what you say a try. Then let you know the result.

Regards

Mark

Rikk is right, try a folder on your desktop first. Also reboot? Also run the free Onyx (titanium-software.com), select the Onyx version for your OS, download, run it, reboot. (In Onyx run almost everything in the Maintenance tab, deselecting things you may not want deleted, like Launch Services . Hit the "Options" button and deselect more stuff like Cookies & Other Site Data, Browser History, Form Values, etc.(if you don’t know what something is, look it up, or deselect it, or ask me), then hit Run Tasks. After it's done it will ask for a reboot.

Hi Rikk & Carlos,

Thank you for your quick response and guidance.

I chose to take Rikk's advice and export to my local drive.  Success!!!

Could it be the way in which I format my USB drive? I haven't tried any other steps yet.

What do you think I should do?

Regards

Mark