Lost serial number for FL Studio 9 (P.E.)

The serial number will be on the packaging that came with the software that you legally bought.

PURCHASING, UPGRADING & REGISTRATION
How to buy, register and unlock Image-Line products DEMO ONLY? Either FL Studio or plugins that it contains may appear as a demo. This means projects saved that contain demo plugins, won't reopen with the demo plugins in place until they are purchased and registered. Once demo plugins are registered, the project will open correctly, as originally saved. To unlock FL Studio or plugins you need to purchase a personalized registry key and install it on your PC. The full purchase and registration procedure are as follows.

1. Use the DEMO - The FL Studio Demo version and Demo plugins allow you to use all program/plugin features so that you can ensure anything you are interested in buying works 'as advertised' prior to purchase. Demos are unlocked with a single registration key (see step 4), your key will unlock only those features and plugins associated with the FL Studio version (Express, Fruity, Producer or Signature Bundle) & plugins you have purchased. Features & plugins included with each version of FL Studio are compared here, on the FL Studio website.
2. Purchase - Go to the Image-Line Store and follow the instructions.
3. Wait for your email - After ordering the plugin you will be sent an email with a login and password to your customized user page on the Image-Line site. Please keep an eye on your spam filter so that it doesn't redirect the registration email to a spam folder.
4. Download your registration key - A single reg-key is required, it will be set to activate your FL Studio version and/or plugins. Go to the link provided, log onto your personal page and find the link that says 'Click here to unlock this product'. Click on the link and save the RegKey to your computer.
5. Unlock the purchased item/s - Run the RegKey file (FLRegkey.Reg) by double clicking on it (or right-clicking and selection 'Merge'). The installation will be treated with some caution by Windows, this is normal, accept all warnings and allow the key to be written into your registry. NOTE: You can save this RegKey and use it with any PC you own, all that we ask is that you are the only user of FL Studio.
6. Use the plugin/software - Next time you open FL Studio you should find that the purchased item is now unlocked and working without any limitations, no additional downloads are required.

If you are having difficulties or questions please try contacting our Live Support through the Image-Line store (the link is located in the top right corner), or contact Technical Support where you can create a traceable support-ticket.

Welcome to fixya,
You can get the serial number by contacting Pinnacle Support center

Hello

Unfortunately we are not permitted to provide serial numbers , illegal download links or software to bypass the copyright protection of software in accordance with our terms and conditions and the DMCA copyright laws.

If you bought the product legally you should contact the manufacturer. The contact details should be on the side or back of the box or CD cover.

I hope you understand. Feel free to contact me if you have any questions.

Kind Regards
Andrea

http://www.sonycreativesoftware.com/reg/faq#faq.ques3

just got my serial number via my acct info.

i need serial number

It means that a sound or plugin that you saved with the file was corrupt, so you will have to scrap the project and start over.