A must if you like to keep older 32-bit plugins working in your newer 64-bit environ. It helps if you organize the plugins and place the 32-bit versions into a separate folder. Then select copy to custom folder option in Bridge during the conversion.That will help you to avoid duplicate plugins in your DAW's manager.
Depending on some plugins, you may get notice and warning dialogs. Ignore and close them out. Test in your DAW before addressing them individually as I've had some warnings but none failed to load and work.
Some licensed plugins will ask for their license, so have those ready.
I have just installed cubase 7 on windows 7 64-bit and have bridge several plugins - Atmosphere, Soundtoys, Kick Ass Brass. None of these plugins seem to be able to find their .dat or preset files. I've used the spectramove utility to set the registry location for the .dat file, and confirmed that is where it points to. Soundtoys plugs launch, but show none of the built-in pesets. KAB can't find the soundfile even though the settings point to the right location for that as well. Any ideas?
On a plus side, I just installed it, and it did something awesome- I clicked the sluggish GUI hack option as well as the Force whole GUI refresh, and now NastyDLA behaves perfectly! I really liked the plug, but the knobs often weren't responsive, and changing a preset did not change the display of the knob positions. Works great now! Makes using a great older plugin a pleasure now. That is awesome!!.
Cubase, FL Studio, Reaper, Bitwig and Renoise all have built-in bitbridges, similar to jBridge, and they are all working fine. Without the ugly "banner" below the plugin window that jBridge has. Don't know about Pro Tools, Ableton and Logic thought.