Every Spitfire Audio Plugin Error and What it Means


Here is a list of the different types of errors you could experience when using our dedicated plugin libraries (libraries that do not use Kontakt). If you cannot resolve the error using the instructions provided, you should reach out to our support team so that we can resolve this for you: www.spitfireaudio.com/support.

Error 1

Error 1 is caused because the plugin cannot locate the Patches and Preset folders. This error can also occur on Macintosh computers that use the M1/ Apple Silicon chipset, and on Windows machines that have a changing Mac Address and/or Network device. For cases involving Windows machines, it is best to contact our support team so that we can discuss and troubleshoot your specific case.

Error 2

Error 2 occurs because you do not have the most recent update to the library plugin. You should first check the Application, to see if there is an update available for the plugin. For libraries such as BBC SO and Eric Whitacre Choir, be aware that there is a separate installation for the plugin. If there is no update available, you should remove the current library plugins from your system and then repair the library in the Spitfire Audio App. This will replace the plugin with the latest version available on our site.

The plugin locations are as follows:


AAX: C:\Program Files\Common Files\Avid\Audio\Plug-Ins

VST: C:\Program Files\VstPlugins

VST3: C:\Program Files\Common Files\VST3


AU: MacHD/Library/Audio/Plug Ins/Components

VST: MacHD/Library/Audio/Plug Ins/VST

VST3: MacHD/Library/Audio/Plug Ins/VST3

AAX: MacHD/Library/Application Support/Avid/Audio/Plug Ins

Error 3

Error 3 occurs if the plugin cannot find the library folder. This can happen because you have moved the library folder without relocating the library in the Spitfire Audio App, or you have installed the plugin only for a library that has separate plugin and library contents installations (e.g. BBC Symphony Orchestra). In some cases on Mac 10.14 or above, this can also occur if your Digital Audio Workstation does not have Full Disk Access.

If you have this error with LABS, you only need to Locate one LABS library to relocate them all.

Error 4

Error 4 occurs due to the sample content being missing from the library contents folder. In the majority of cases, this has happened because the user has repaired the library in the wrong location, and you should check that you default content path is set to the folder/ hard drive that contains your library folder(s).

Error 5

Error 5 occurs because the plugin cannot locate the spitfire.properties folder. In the majority of Windows cases, this is because you are using an Admin and User account setup, and have only installed the library on one of these accounts. The fix is to copy the spitfire.properties folder over from the Admin account to the User account whenever you have installed or repaired a library.

Currently on Macintosh, LABS can output Error 5 incorrectly and in most cases, this is actually Error 3. We are working on a fix for this to be released as soon as possible. In the meantime see the Error 3 fix above.

Error 6

Error 6 is very rare, but occurs if you sample files have become corrupted or have been edited by the user (e.g. if you have renamed a sample file). It most cases, you can identify the corrupt files by filtering out the files that contain zero bytes. If you are using a big library, like BBC SO, you should reach out to support as we can provide you with individual replacement sample files. If you are using a smaller library like Originals, you will find it quicker to simply delete your current folder and redownload the library contents via the Spitfire Audio App.


  • this plugin sucks, doesn't even work properly.

  • Hi @Idris

    Have you tried reaching out to our support team at www.spitfireaudio.com/support?

    We will be able to help you troubleshoot the error, and offer advice to make sure you can permanently fix your plugins.

  • When I try to download free sample inside spitfire and try to install , It shows installation error why?

  • Hi @maniiicon

    I have created a ticket for you so that our team can investigate.

  • Error #1

    Installing your LABS library to an external drive is hopeless

    The reason you would install it externally is so that it saves on internal disk space and more importantly so that the library can be used across multiple devices (laptop, desktop etc..)

    However this is impossible

    Using the LABS library with any new device breaks the connection with the old device and gives Error #1


    You can follow the video above but it takes so long you might as well just delete your entire LABS library and download them all again because it takes the app the same amount of time (or more depending on how good your internet connection is) to re-scan the library and presets

    It took about 3 hours the last time I tried this and that was to scan a 20 gigabyte library on a fast SSD connected over Thunderbolt 3

    And then of course you if you unplug the drive and try it in a new device - you have to start all over again

    I know it's free and we shouldn't complain, but LABS has become useless across multiple devices

    If LABS is supposed to give the user a taste of what the paid Spitfire plugins are like - well then it is a bad taste and I would never consider buying any - far too much hassle

  • Hi @Cocker

    Our plugins currently do not support location sharing between two devices. This is something our team are looking into in the future, but for now, you should install Spitfire Plugins to separate storage locations for each of your two devices.

  • Cocker
    edited January 2022

    Thanks but I think you need to realise that for a working musician it renders them practically useless

    Most Mac users simply won't want to use their dearly bought internal storage on sample libraries

    It also goes against most industry norms (including your own paid libraries) to have an internally stored, non transferrable sample library

  • I can’t make it work I bought BBCO Pro and the HHD associated with to using in two computers and is not working….. I need somebody navigate in my computer and do the proper installment. Now because I tried I can’t reinstall as it allows only 2 times, I can’t work properly like that… nobody from the support chat is replying and I’m writing from yesterday…..aaahrg

  • I am getting this error in Spitfire Audio Labs: Error Assessing Install Location. I tried to install a library earlier today, and it showed up in the GUI, but with no sound. Now, it shows that it isn't even installed, and I see this same error again. It's not on the above error list. It says to please close any other audio software and try again, however even a reboot did not help.

  • I have the same problem right now. my PC crashed during an installation of a LABS library (Siren Songs) and now I cannot reinstall or repair (no repair button there). all other LABS libraries are working, but the error2 message appears ( "patch not supported by this version: ...") when I try to reinstall Siren Songs or try to install another LABS library, the error message appears in the SPitfire App: "Error Assessing Install Location: The application does not have the write access to the install location" . There are some files and .part-files in the installation directory, will it work if I delete those? I hope, we will get an helpful answer soon.

  • okay, i got the ssd working again. it was a PC-crash issue, so it doesnt really belong here. Case closed so far. Sadly the Siren Song Library still doesnt work. always error2. I deleted the Siren Songs Folder in the Patches folder, then the error2 message changed from "directory.../patches/sirensongs/blabla" to "directory.../presets/sirensongs/blabla". deleted the siren songs folder in the presets folder. Error2 messages are gone. Everything else works fine - just no Siren Songs for me. I dont know why but I can live with that..