Re: lightroom 4.0

Please post your System Information as Lightroom Classic (LrC) reports it. In LrC click on Help, then System Info, then Copy. Paste that information into a reply. Please present all information from first line down to and including Plug-in Info. Info after Plug-in info can be cut as that is just so much dead space to us non-Techs.

You have to provide a lot more information.

• Is this the old Lightroom 4 from 2012, or version 4 of the cloud based version of Lightroom?
• Please tell us your operating system and version
• What exactly happens when you try to export?  Please provide details.
  If there is an error message, please quote it in full.