colour tone change

[CaddyBay]

When I toggle to Library from Develop my photos have a red tone.  I have been using Lightoom since 2014. I have tried many different edits but cannot solve my issue.  Can anyone suggest a possible reason this is occuring and how one solves this issue.  Attached are 2 photos.  The one that is on the red side is the Library version of the Develop version.  Thanks!  Barry

[johnrellis]

As a first troubleshooting step, quickly test if the color profile assigned to your display is corrupt or incompatible with LR:

http://www.lightroomqueen.com/articles-page/how-do-i-change-my-monitor-profile-to-check-whether-its-...

[CaddyBay]

In Lightroom Preferences I turned off Performance/Use Graphic Processor.  Voila!  Problem solved.  John, you did not hve the solution but gave me ideas of where I could look to solve the problem.  Many thanks hekping me prevent a total disaster with my photo shoot!

[johnrellis]

Glad you found a solution. If you want to re-enable the graphics processor to get better performance at some point, try the diagnostic I posted above. Sometimes a display profile may work with the GPU turned off but not with it turned on.