The file could not be edited because Photoshop CC2018 could not be launched

After editing a file in Lightroom Classic and upon trying to send it over to CC2018 for futher work i am getting the message "The file could not be edited because Photoshop CC2018 could not be launched". If I click OK on the message, after about 10 seconds the file will eventually open in Photoshop.
This is only happening with images I have edited in lightroom. If I export from Lightroom without editing it will open right away. Any help appreciated.