If the plug-ins are not showing after running the installer, they can be installed into LightRoom 3 manually using the instructions below.

Please launch Lightroom 3 and go to File > Plug-in Manager
Click “Add” at the bottom left of the menu
A finder window will open to browse to the correct folder location (see path below)
Select the [...]

These instructions show how to access the onOne Plug-ins from Adobe Photoshop CS2, CS3, CS4, CS5, and Adobe Photoshop Elements.
The first step is to make sure you have an image open in Adobe Photoshop before attempting to access any of the onOne Software plug-ins.
Adobe Photoshop CS4 and CS5
There are two ways to access the onOne [...]

The first thing to check is to make sure you do not enter in the dashes, also, do not copy/paste the number into the field.  This will cause errors.
If the above steps do not work and the error message still shows, this can only mean the product you are trying to activate does not match [...]

Please click here to learn about the compatibility with Adobe Photoshop CS5.

The first thing to check is to make sure Photoshop was closed during installation of the plug-in. If not, simply restart Photoshop. Once Photoshop is open, please go to Window > Extenstions > onOne
.
This will open the onOne panel giving you access to your product. Just open an image in Photoshop and choose your plug-in [...]

Unfortunately, the onOne palette is only compatible with operating systems in English. The palette is not available for non-English operating systems.

This preset is actually no longer available in PhotoTools 2.5 (standard or professional edition). You can recreate this preset by using the following two effects which are available.
Green Velvet
Radiance Landscape A2…

Please make sure the latest version of Microsoft.net framework 3.5 installed along with Visual Studio 2008.
Please click here to download and install Microsoft.net Framework 3.5
Please click here to download and install Visual Studio 2008
These are “helper” files needed from Windows (XP, Vista, and 7) for our programs to work properly. In most cases, the Microsoft [...]

Here is the error window you will see:

Please close all of your applications currently open (Photoshop, etc). To remove this error message, please remove the following two files which are parts to the onOne Library:

onOne Library.dll
onOne Library.acel.8bx

These two files help create the onOne menu. These files are in the following location:
Windows: \Program Files\Adobe\Adobe Photoshop CS4\Plug-Ins

Please [...]