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I wrote an exporter plugin for LightRoom 3 and 4. The code was compiled with SDK-4 using the windows version of Luac version 5.2.1. The compiled project works fine with LR4 but crashes when attempting to use the plugin for a second time [in LR3].

My intuition tells me that I need to (a) compile with an earlier version of Lua (b) with SDK-3.

Can anyone confirm which version of Lua and SDK should work with the latest version of LR3?

Richard
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    Does LightRoom use Lua 5.2 at all? – lhf Sep 28 '12 at 00:33
  • @lhf my export plugin, was compiled(lua5.2.1) and tested with LR4+SDK4. It was confirmed to work on mac and windows LR4 installations. – Richard Sep 28 '12 at 00:44
  • "Lightroom 4 uses version 5.1.4 of the Lua language." http://wwwimages.adobe.com/www.adobe.com/content/dam/Adobe/en/devnet/photoshoplightroom/pdfs/lr4/lightroom-sdk-guide.pdf – lhf Sep 28 '12 at 01:38
  • "Lightroom 3.0 uses version 5.1.2 of the Lua language." -- SDK-3 – Richard Sep 28 '12 at 02:17

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Thanks to @lhf for pointing out that the SDK-4 had the language info in the PDF. Since I had the PDF for SDK-3 I checked the same section of the DOC. Voila, the same info was there.

"Lightroom 4 uses version 5.1.4 of the Lua language."
"Lightroom 3.0 uses version 5.1.2 of the Lua language."

** special thanks to @lhf!

Richard
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