Serial Number / Authorization

If you purchased Serum from this website: You should find your Serum serial number in "your account" section of the website. If you don't see any purchases there, most likely you purchased under another account/email address. Use the contact form and please include as much info as possible about email(s) used and a date and time of purchase if possible. If you are leasing Serum from Splice: Try signing out and back in to the Splice client app. If that does not resolve it, verify your payment info is up to date on their website.


1) In Serum, Menu->Show Serum presets folder Go in to Skins folder - make sure there are no files there which don't belong. - make sure no skin folder names are too long (~30 chars is limit) 2) delete the Serum.cfg file [MAC OS] command-shift-G in Finder and type or paste the following line (including ~ mark): ~/Library/Preferences/ delete Serum.cfg file located there. [WINDOWS] %APPDATA%\Xfer\Serum delete Serum.cfg

If Serum is not updating, most often this is Windows OS (?): You're probably installing to the wrong location vs. where the DAW is set to look for VST plugins. Look where your DAW is set for VST Plugins and delete Serum.dll / Serum_x64.dll from that location. sanity check: Verify Serum is no longer available in the DAW. Then quit the DAW and run the update to that location. In FL Studio, check FL options->Plugin Manager, and delete any and all instances of Serum (expand window to the right if needed to see path) in Windows explorer, rescan and verify Serum is not available, then quit FL and run the update.

SerumFX is a bonus plugin available to customers. In the case of Splice rent-to-own, it is available once payments begin (after the 3-day trial period). You can find it on Splice under Alternatively, you could use "forgot your password" on the Sign-in page on this website to the email you started the lease under - once logged in, you will find SerumFX in "your account".

You should be importing as follows: 1) In Serum: Menu->Show Serum Presets Folder 2) put the presets you want in a folder inside the now-visible "Presets" subfolder 3) Back in Serum: Menu->Rescan folders on disk then they should appear in the menu/browser.

If you are on Windows OS, try moving "Serum Presets" folder from \Documents\Xfer to C:\ exactly so you have C:\Serum Presets\ and the folder is no longer in the \Documents\Xfer location.

Serum will ask for the new folder location next run.

Run the full version installer.  Restart your DAW. 


If you are unfamiliar with VST Plugins, you should have a VSTPlugins folder.

I personally use C:\VSTPlugins but you can make the folder elsewhere.   

Install Serum VST to this location when running the installer.

In your DAW, you need to set it to look for VST Plugins at this location.

in FL Studio: -> Options ->Manage Plugins, and add a Search Path in top-left to your VST folder location (e.g. C:\VSTPlugins) containing Serum.dll / Serum_x64.dll


(Windows) Ableton Live 10: -> Preferences -> Plugins, enable "VST2 Custom Folder" and set the VST2 Custom Folder location to the folder containing Serum_x64.dll

(MacOS) Ableton Live 10 :  -> Preferences -> Plugins, enable "Use VST2 System Folders"

(MacOS) Ableton Live older version (8 or 9):  Make sure it shows 64-bit on startup on the splash window.  If it shows 32-bit, download Live 64-bit from your account which should be a free download.  In Live Preferences->File/Folder, enable "Use VST System Folders".

Sounds like you have an old presets folder, perhaps relocated. Click ok to the error message.  Go up a folder level (backspace key on Windows / command-uparrow on MacOS) and rename that “Serum presets” folder (eg “Serum Presets-Old”). Then reinstall the full version of Serum from your account.

(Windows OS) If the problem persists, try

1) moving Serum Presets folder *from* \Documents\Xfer *to* C:\ so you have C:\Serum Presets and no longer in the \Documents\Xfer location.

2) Windows Key + R (Run):


delete the Serum.cfg file there.

Plug-in won't update

- You need to restart/relaunch your DAW if you haven't already (some DAWs will cache the plugin in RAM until quit). [the information below is for WINDOWS OS]: Most commonly if the plugin is a not updating, it is because you are installing the VST to a different location than you DAW looks for plugins. Go in to your DAW settings and look where it is set for VST plugins: - in Ableton Live, this is in Preferences->File/Folder->"VST Custom Folder" - in FL Studio, this is in the plugin manager (Options->Plugin Manager) - in most other DAWs, this VST folder path is in the Preferences. The sure-fire method to update: Go to the above location(s) in Windows Explorer. Delete the plugin file (e.g. Serum.dll / Serum_x64.dll) from any and all folders your DAW looks to for plugins. Rescan in your DAW (or restart it) and verify that Serum is no longer available. Then run the update installer to the location where the plugin file(s) used to reside at.

Serum (Splice Rent-to-Own user)

Try signing out and back in to the Splice app.   When using Splice RTO, you should not be asked for a product key for Serum. Since you are, this means one of a few possibilities: - you had previously installed an old copy Serum on the computer and it is (now) running - Splice has not deposited a license on your computer (e.g. download / update Splice app and log in) <- very likely if "new computer" - Splice has revoked a license from a failed payment (?) <- very likely if it worked prior... Keep in mind you need to be connected to Splice app online at least once every 3 days.  Once you have paid off Serum this is no longer needed. (windows) You can go to  C:\%localappdata%\Splice and verify you see a Serum.lic file Also, here's boilerplate message from Splice (and me I guess now!): ---------------- Please make sure you have deleted any previous versions of Serum you have on your computer. Then confirm that you are signed into the Splice app (the Splice logo will appear in your menubar) and have the latest version of the Splice client installed. The current version for OSX is 2.1, and for Windows it's 1.2.15. If you need to download the Splice app, you can do so here: If you need to re-install Serum, open the client and navigate to the 'Plugins' Tab and click 'Reinstall'

You can update via the "Update" button on the "Plug-Ins" tab of the Splice client app.  Alternatively, you can use "forgot your password" to the email you started the lease under to sign in to this website.  If you're unsure of that email address, use the contact form and provide your Splice username.

Educational Pricing

I offer discounts to full-time students (30+ hours weekly coursework) as a form of subsidy for those who are unable to work.
If you qualify as such, you can fill out this form and you'll receive notification if approved.

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