License loop

[Ptrhnm]

I'm using FL Studio 12 32-bit and every time I return to saved project with instances of Sylenth1, I need to activate them. This also occurs when I'm loading a old preset, it asks for activation code. Then I'm requested to reload the plugin, which sometimes leads to crashing of FL Studio.

[Lennard]

Sounds like you've got multiple installations of different Sylenth1 versions in your VST folders and FL Studio randomly loads the other one.

Uninstall Sylenth1, search all your VST folders for any leftover files or folders named Sylenth1 and delete everything. Startup FL Studio to make sure it's really gone. Then close it again, download Sylenth1 from the links in your license email to make sure you have the latest available version and install it.

Install ONLY the 64 bit version if you’re using the 64bit version of FL Studio.
Install ONLY the 32 bit version if you’re using the 32bit version of FL Studio.
Do not install BOTH the 32 and 64bit versions at the same time.

Then follow these steps to rescan the plugins properly in FL Studio 12:

1. Open 'Options > File Settings'.

2. Select 'Plugin Manager' and select the following options:

'Rescan previously verified plugins'
'Rescan plugins with errors'
'Verify plugins'

3. Start scan.

[Ptrhnm]

Thank you. After some cleaning, everything works just fine.