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yarnella
27-01-2010, 7:49am
I am running LR 2.6 and PS CS4 on Windows XP Pro SP3.
In LR when trying to edit a PEF image in CS4, LR opens CS4 but does not open the image, saying: “File could not be opened because CS4 could not be launched”.

Has anyone else experienced this? Any clues?

It used to work just fine in CS3.

monkey
27-01-2010, 7:57am
hi ray,

are you able to open images in CS4 directly? without LR first?

have you tried completely uninstalling CS4 and re-installing.

yarnella
27-01-2010, 7:59am
hi ray,

are you able to open images in CS4 directly? without LR first?

have you tried completely uninstalling CS4 and re-installing.

Yes and yes.

Reinstalling CS4 made no difference.

yarnella
27-01-2010, 8:08am
I saw a reference to this problem at the bottom of this page http://thelightroomlab.com/2009/07/optimizing-lightroom-for-best-performance-top-ten-lightroom-speed-tips/ where someone with a MAC reported the same condition.

So, I knew I was not alone.

kiwi
27-01-2010, 8:58am
It happens to me too, I usually just have open CS4 first and then it seems quite happy

IanB
27-01-2010, 9:07am
Is a PEF image the pentax raw?

yarnella
27-01-2010, 9:17am
Is a PEF image the pentax raw?

Yes.

It will open a TIFF but only if I chose "Edit a Copy" or "Edit Original". Not if I choose "Edit a Copy with Lightroom Adjustments".

monkey
27-01-2010, 9:30am
do you have the latest version of Adobe Camera Raw installed?

yarnella
27-01-2010, 9:35am
do you have the latest version of Adobe Camera Raw installed?

Yes. Latest versions of all - LR, CS4 and ACR.