I have LR2. On Adobe I updated to LR2.7 and since then having problems editing images in PS6.

Question

I select image in LR2.7 to edit in PS6.  It launches PS6 but image does not come through.  It comes up with message "the file could not be edited because CS6 could not be launched" when in fact it has launched CS6 but not the image.
I have uninstalled LR2 a few times and reinstalled it and when I leave LR2 I can select image to edit in CS6 and it works okay but when I update on Adobe website to LR 2.7 it starts to play up and not work.  What is the problem? 
Can anyone help with this as I am starting to tear my hair out.  Have had this problem for a couple of months now and cannot do my work.

Answer 1

Firstly thanks for your responses.
I have Windows 8 not Windows 7. 
I have brought down the UAC setting but it still does the same but I just answer yes and it opens CS6 Extended but not the image.  The fact is that when I ask in LR to edit in CS6 it tells me it can't open CS6 but it does open CS6 but not the image.  Even if I ask to "open as smart object in Photoshop" it does not do it.
No matter where I start Lightroom from it still does the same.  I only used Bridge a couple of days ago for the first time so this problem has nothing to do with Bridge.  When I select an image in Bridge it does bring it up in CS6 when I ask so this works fine.
In LR/Photo/Edit in, if I select "Edit in Photoshop.exe" it works - it takes the image and gives me the option of edit a copy with LR adjustments etc but if I go LR/Photo/Edit in "Adobe Photoshop CS6" it just opens up CS6 and not the image plus gives me the message "the file could not be edited because CS6 could not be launched" when it has launched.  So should I just use "Edit in Photoshop.exe" or not - I don't fully understand all of this so maybe you could explain in lay terms.
As I said earlier, it has only recently happened, in the last couple of months.  Before that I had no problems so I don't know where this problem came from.  The only thing I can remember is one day I was playing around with the preferences and maybe I have done something with that in LR and CS6 but I don't know.
Hopefully this will answer back some of your questions but it has nothing to do with Bridge as per your views in the posts below.