…It was actually kind of tricky since there were so many areas where the plug in resided in.
No way! There is only one possible correct location, period.
Follow the instructions in the tech note you cite and remove all extraneous instances of the Camera Raw plug-in you find on your system.
Make sure you have installed ACR 5.4 (the Camera Raw plug-in) in the correct location.
Install the maximum version that your version of Bridge is compatible with. For example, if your version of Bridge is compatible with Camera Raw versions through 5.4, then install version 5.4 — even if you only need version 5.1 or earlier to enable support for your camera.
In connection with Photoshop Elements 6 for the Mac, Bridge CS3 can run ACR 5.4. (With Photoshop CS3, Bridge CS3 can only run ACR 4.6.)
Bridge 2.x (CS3) was and remains the worst piece of software ever released by Adobe or any other major software developer. It should have been fixed for free by Adobe but, shamefully, it wasn't. The latest and last version of Bridge CS3 was 184.108.40.206. Make sure you have at least that.
Fortunately, Bridge 3.x (CS4) is much better.
What you undoubtedly need to do is Purge the cache for each folder through the Tools menu in Bridge, not mess around with file extensions (bad, bad move!).
Thanks Ramon. What's interesting is that the tech note in the original thread says to use the preference route to delete the cache. I thought one of the tech articles showed the installation of the plugin in both the Bridge and PSE6 plug in folders (in addition to the one in the CS3 Library version).
I deleted the two other copies of the plug ins from the PSE and Bridge and left just the one in the main library. It still doesn't work when I double click the file in Bridge. I think that it may be due to the file extension generated by the G1 - RW2. WHen I look in bridge's preferences for file type associations, it only lists .RAW for panasonic and not the new RW2.
That's why I tried changing the file extension for the one test file. It seems like the only problem I have now is just a file association file within Bridge.
…I deleted the two other copies of the plug ins from the PSE and Bridge and left just the one in the main library. It still doesn't work when I double click the file in Bridge.
But did you Purge the Cache for the folder through the Tools menu in Bridge?
…I think that it may be due to the file extension generated by the G1 - RW2. WHen I look in bridge's preferences for file type associations, it only lists .RAW for panasonic and not the new RW2.
Aah! RW2 files are expected by Camera Raw (and thus Bridge) to come from a Lumix DMC-GH1, first supported in ACR 5.4. Make absolutely certain you have ACR 5.4 installed as shown in About Plug-ins, or whatever that may be called in Elements.
Be aware that Camera Raw is intentionally and severely emasculated when hosted by Elements. You'll have limited access to a limited number of ACR features only.
Here's the entire list of supported cameras:
Lumix DMC-GH1 RW2 5.4
A Panasonic DMC-G1 is indeed expected to generate ".RAW" files. See the list.
DMC-G1 RAW 5.2
You have to be careful that by changing the file extension you're not just forcing ACR to open and show you just the in-camera embedded JPEG preview.