I think it depends on what camera you have and what version of ACR is installed with PSE. If your version of ACR is older than your camera, it won't recognize your camera's files.
Try going to Adobe's website and downloading the latest ACR version, 4.2 . There will be instructions on installing it for PSE.
I use Elements 5 and I'm able to open raw files (.cr2) for Canon cameras as recent as the 40D and 1D MkIII. I use Adobe Raw 4.2 as noted above, availabe from the adobe website as an update. Follow the instructions to place the plug-in in the correct directory for Elements 5.0.2
One note, you cannot yet open sRAW files with the Adobe Raw plug-in, only RAW. (sRAW files also come in as .cr2)
Comments
I think it depends on what camera you have and what version of ACR is installed with PSE. If your version of ACR is older than your camera, it won't recognize your camera's files.
Try going to Adobe's website and downloading the latest ACR version, 4.2 . There will be instructions on installing it for PSE.
Hope this helps,
Bill
One note, you cannot yet open sRAW files with the Adobe Raw plug-in, only RAW. (sRAW files also come in as .cr2)
Tim