We have updated the Mac OS, updated the Epson drivers, updated Adobe Create Cloud. We were able to print some pictures successfully yesterday, but since then we have been unable to print. As soon as we click the Print button, LR freezes (even the Quit menu option is disabled). We use Force Quit to end the program (but it shows no signs that LR is unavailable). There are no crash messages. When we looked at the System Info dialog, it refers to me as a "Lightroom mobile User". I clicked on something a while ago to investigate it, but had no intention of becoming a mobile user. Could that be part of the problem?
Please follow the below steps.
Go to Lightroom Preferences from the Edit menu
Click on Performance tab
Uncheck the Graphics Processor
Let us know if that helps.