Hey,

I've done a nice UI with Nevron OpenVision, the .exe works on my PC, but when i try to run my software on a clean virtualbox with just .net framework, the program stops to work with an error in the Presentation.dll, is there any fix to that problem ? Am i doing something wrong ?

Hello Alexandre,
Did you configured your Desktop license key in the application code?
Take a look at the "Desktop Redistribution" section in the Help Documentation -> Getting Started -> Activation

using Nevron;
...
NLicense license = new NLicense("licenseKey");
NLicenseManager.Instance.SetLicense(license);

It is important to apply the license before any constructors are called. 
The LockLicense property instructs the manager that no further license changes must occur.

Best Regards,
Nevron Support Team

Hey ! I did