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Internal Math Error when exporting as well as blue screen with crossover in Develop

Community Beginner ,
Jul 04, 2017 Jul 04, 2017

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I was batch exporting some images from Lightroom and at the end of the Export I received a Dialog box saying there had been an internal Math Error on 1 of my images.   The image itself was a copy so I thought maybe something was wrong with the copy.  As I had made changes to the copy, I tried to Sync the Develop Settings to the original image.   When I hit D for Develop, I received a blue image with a white x running through it.  I could still execute the sync but It had no effect on the original version of the image.  I then tried to sync the develop settings of another image (that didn't seem to have the problem of a blue image) and copy that to the original image and again no effect.   It seems that this blue screen with x only is effecting 2-3 images out of the 400.   I went to Preference>Performance>and deselected Use Graphics Processor but now the images effected are just black when I try to edit them in Develop and the Develop settings are all greyed out.   Tried to contact Adobe support but they won't give me the option to chat.  Any help would be greatly appreciated. I'm using latest version of Lightroom CC on a iMac retina 5k late 2014 i7 4GHz processor 32GB RAM AMD Radeon R9 295X 4GB

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correct answers 1 Correct answer

Adobe Employee , Jul 14, 2017 Jul 14, 2017
Hi gnrd,You may try and reset the Lightroom preferences back to default for the "Internal Math error" also, the images are showing black are you able to export those images out? because it's possible that the images are missing from Lightroom and you may need to relocate their locations in Lightroom. Reset Preferences: Preference file and other file locations | Lightroom CC and 6 Relocate missing images: How to find missing photos in Photoshop Lightroom Regards,Mohit

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Adobe Employee ,
Jul 14, 2017 Jul 14, 2017

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Hi gnrd,

You may try and reset the Lightroom preferences back to default for the "Internal Math error" also, the images are showing black are you able to export those images out? because it's possible that the images are missing from Lightroom and you may need to relocate their locations in Lightroom.

Reset Preferences: Preference file and other file locations | Lightroom CC and 6

Relocate missing images: How to find missing photos in Photoshop Lightroom

Regards,

Mohit

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Contributor ,
Jun 02, 2019 Jun 02, 2019

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does not work.

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New Here ,
Aug 02, 2021 Aug 02, 2021

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This problem has NOT been answered.  I have been dealing with this Internal Math Error during export for months now.  It is adding many hours to my work flow and is seriously making me consider making the swtich to CaptureOne.  

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Explorer ,
Sep 12, 2021 Sep 12, 2021

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I just have the same issue. 
Your suggested solution doesn't work!

Where is a solution for this?

I need to deleiver to a client tomorrow ans 1/3rd of the images won't export!
It seems random One iomage does, the next doesn'T export with pasted settings of the image before. 
If I reset the seetings it exports. This must be some preset issue WTF Adobe!

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