Any Adobe program updater looks for updates to all installed Adobe software. If you also have Photoshop Elements 9 there is an update (184.108.40.206) to the program to fix issues on single processor machines. Also an update to Camera Raw to v6.2.
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I would like to know the reason for the PSE update 220.127.116.11. In the Adobe Application Manager, there is this incomplete statement:
"This update fixes a problem on Single core CPU's... Learn More"
Clicking on 'Learn More' brings up the Adobe Products update page but nothing at all on the PSE 18.104.22.168 update.
Maybe someone on the PSE forum can shed some light on that update. Mention was also made of an update for ACR, the Camera RAW converter, which gets updated, as new cameras come on line, and maybe this was a roll-up of a little code in PSE plus ACR?
Adobe is usually pretty good at getting out details of the high-points in updates, but not always.
PS - welcome to the forum!