How to Enter a New Final Cut Pro Serial Number

for OS X 10.6.8 Snow Leopard Systems -

click on your MAC internal hard drive, and navigate to -

/library/application support/ProApps

find the file called -

Final Cut Studio System ID file, and delete it.

when you open up Final Cut Pro again, it will ask you for a new (legal) serial number.

For OS X 10.8.2 Mountain Lion Systems -

click on your Mac internal hard drive, and navigate to -

library/application support/ProApps

delete ProAppsSystemID

delete FinalCutStudioSystemID

navigate to -

library/preferences

delete com.apple.RegFinalCutStudio.plist

restart your computer. Launch FCP, and enter the new serial #.