Make Sure Your Running Lightroom In 64-Bit

After installing Snow Leopard a few days ago I took the time to open Activity Monitor to see what programs were running in 64-bit and which ones were left in 32-bit. To my surprise I saw that my copy of Lightroom 2 was running in 32-bit still.

Lightroom running in 32-bit

Lightroom running in 32-bit

Now I was really disappointed to see this because I though Lightroom 2 was supposed to run in 64-bit. So I went into my applications folder, found the Lightroom 2 app, and pressed Command i to get more info on the program. There I found the culprit. There was a box that was checked for the app to run in 32-bit mode.

32-bit Mode

32-bit Mode

To fix this problem simply uncheck the box and open the app. When the application loads you should see that it now says 64-bit on the tittle screen. Running Lightroom in 64-bit now has given me a huge speed boost all over the application from load up time, to editing, and export.

64-bit

64-bit

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2 comments

  1. Thanks dude! It’s really tricky to figure this out if somebody doesn’t tell you. Do you think LR runs faster in 64 bit? Seems to…

  2. Holy Moly- thank you so much! This fixed a huge array of bugs for me…

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