There are a number of common problems people encounter with Native Instruments products that are easy to fix once you discover the root cause. Unfortunately, some of the error messages you get when the problems occur are vague or misleading. I wrote UltimatePluginTool to help folks identify and correct these issues. In this article I'll walk you through how to fix the following errors:

Omnisphere 2 Installation Was Not Completed Properly Download
Omnisphere 2 Installation Was Not Completed Properly Used

Upgrading to Omnisphere 2 will supply the complete 60GB Omnisphere 2 sound library, which includes the sounds from Omnisphere 1. If Omnisphere 1 is already installed, you will not lose any custom user-created sounds or third-party libraries. Hi all, i had the same problem. My psychoacoustic category didn't install properly and a complete re-install didn't solve the problem. I did an successful install on a second computer. Then it was easy to compare the two steam folders. The file psychoacoustic01.db was only 154MB instead of 6.66GB. After simply overwrite the small file with the big file, my omnisphere is loading every patch.

'Loading Issue: Could not load plug-in' (Komplete Kontrol)
'Error: Unable to load Slot' (Maschine)
'Load Plug-in: Could not load 1 or more plug-ins!' (Maschine)
'Error while reading file: This file was saved with a newer version of Reaktor!' (Reaktor)
'This patch was generated by a newer version of the application. Please upgrade your copy to load the patch.' (Kontakt)
'Loading Issue: Plug-in failed loading. The plug-in is likely too old and needs updating.' (Komplete Kontrol)

Note: While this article and UltimatePluginTool are specifically for VST plugins on Windows operating systems, some of the information here may apply to other plugin formats and platforms.

1. Download and install all your Service Center updates

Before we get started with UltimatePluginTool, it will help to make sure that all of your Native Instruments products are activated and up-to-date. Launch the Native Instruments Service Center and make sure you see the 'All products are activated' message on the Activate tab. If you don't, go to the Update tab and download/install any pending updates.
Note: It is still possible to get errors about Reaktor and Kontakt instruments being saved with newer versions of those products even after you've installed all your updates. UltimatePluginTool will help you fix those errors if you perform the following steps. You should just be sure you've installed the updates before you proceed.

2. Install and launch UltimatePluginTool

Download and install UltimatePluginTool from the Ultimate Outsider downloads page. If you accept the default installation options, UltimatePluginTool will launch automatically once setup is complete. (Otherwise you should find shortcuts for it on your desktop and your Start menu.)
You should also make sure to quit any DAWs, plugin hosts, or Native Instruments software before you continue.

3. Scan for duplicate plugins

Omnisphere 2 Installation Was Not Completed Properly Download

If you have multiple copies of different versions of plugins scattered about your various plugin search paths, DAWs and plugin hosts can get confused, loading an outdated version of the plugin even after you've installed updates. On the UltimatePluginTool Start page, select Find duplicate VST plugins and click Next.

If you are running 64-bit Windows, you'll have a choice of whether to search for 32-bit or 64-bit plugins, since those files are normally installed in different locations. Choose which plugin type you'd like to check for first, and then make sure your desired plugin paths are listed under Plugin folders.
The first time you run this wizard, UltimatePluginTool tries to detect some common plugin locations on your system. If you use different folders than those that UltimatePluginTool finds, you can make the appropriate changes now with the Add New and Remove buttons. The program maintains different folder lists for 32-bit and 64-bit plugins.

The program discovered some plugin folders on this computer. If you keep folders in other locations, use Add New to locate and include them in the search.

Click Next. UltimatePluginTool will search your plugin folders for any duplicate files, or for unsupported files (for example, 64-bit plugins in your 32-bit plugins folder). Once the scan is complete, some statistics will appear in the Search status portion of the screen, and if any duplicates or unsupported files are found, their names will appear in the Duplicate files and Unexpected files lists below.

The results of a scan for 32-bit duplicates. Since 'show duplicates' is unchecked, only files with duplicates are displayed at the moment.

Select a filename in the Duplicate files list to see more information about the specific files discovered.
In the above example we can tell that the first file in the details list is the older one by its Date and Version number. Selecting a file in the details list enables the three action buttons on the right.
To remove the outdated file, click Delete, then click Yes when asked whether you would like to proceed.

Remember to re-run this wizard if you are running 64-bit Windows, in case you still need to scan for 32-bit or 64-bit plugins. See the included user guide for more information about the Find Duplicate VST Plugins wizard.

Omnisphere 2 Installation Was Not Completed Properly Used

4. Look for wrong or broken file paths

Once you're sure there aren't any duplicate copies of your 32-bit or 64-bit plugins in your various plugin folders, re-launch UltimatePluginTool or navigate back to the Start page. Select Manage installed Native Instruments products, and then click Next.

Note: If you have a large number of Native Instruments products installed, or if you have some very old 32-bit-only products installed, the product scan might take a minute or two the first time you run it. Once the scan is complete, it will populate the 'Product information' list with all products discovered on your system.
To check for file location problems, make to check the options to show apps and plugins, content libraries, bundles, drivers and utilities, and broken folder items. Also make sure to uncheck Show valid folder items, like in the following screenshot:

The above settings will display only products with detected file path problems.

In the above example, UltimatePluginTool discovered that it couldn't find the Kontakt 5 plugin in the folder where it's supposed to reside. This happened because we just used the duplicates finder to delete the outdated version of the plugin that had been located in that folder. Even though we know there is a recent version of Kontakt 5 in our plugin search paths, if the plugin isn't located in the exact folder specified on this screen, then Komplete Kontrol and Maschine won't be able to find the plugin if you try to load any Kontakt instruments with them.
To select the correct folder, click the Options button next to the folder you need to change. This opens the Change Folder dialog:
This dialog lists all the folders that all currently installed Native Instruments products (including the current one) are already using. If you see the folder you want already listed, just select it and then click the Use for (product) only button. In our case, the folder we need isn't listed, so we need to click Select Another Folder and locate the folder. Once the folder's selected, we can click Use for (product) only to continue. Omnisphere 2 installation was not completed properly used

Omnisphere 2 installation was not completed properly used

After you select a different folder, UltimatePluginTool re-checks the paths. As we can see here, we selected the correct path, and we have the latest versions specified for