Why couldn't I finish install Photoshop Elements 11 due to conflicting processes running?

Question

On my iMac7,1 running Mac OS X 10.8.3, I have installed Photoshop Elements 10 and Premiere Elements 10.  I bought Photoshop Elements 11 (& Premiere Elements 11) at a retail store and began installing Photoshop Elements 11 from the DVD from the retail store.  The install software accepted the Photoshop Elements 11 serial number that found on the DVD packaging and entered at the prompt, but then I could not continue the install due to 3 processes that the install said were running.  I had previously shut off my virus protection software and could only see one application, other than the installer, running (iClock), so I was puzzled how to shut down these 3 processes:
ElementsAutoAnalyzer
PhotoshopServer
dynamiclinkmanager
I suppose I could have gone to the Activity Monitor.app to see if they showed up running there, but that seems pretty extreme for a simple install of a standard appication like Photoshop Elements ... so I went to Adobe chat support and explained the problem in some detail.  The support professional told me that this problem was beyond his expertise and suggested I call the phone support service.  Does anyone know what I did wrong?
Here is the error message that I got when I quit the install:
Installation Status
Installation was cancelled
Exit Code: 24
-------------------------------------- Summary --------------------------------------
- 0 fatal error(s), 1 error(s), 0 warning(s)
ERROR: DW046: Following Conflicting processes were running -
block:ElementsAutoAnalyzer{|}block:PhotoshopServer{|}block:

Answer 1

Extreme or not, activity monitor is the place to stop them. I would also go to the organizer preferences>media analysis and put a final stop to the auto analyzer unless for some reason you want PSE to pass judgment on your photos.