License Exception Occurred in Chartfx.dll Error on .NET Environment

Dear .Net users,
I am facing a savvier problem with the following message. I am pretty new to the .Net environment, and have little experience in error handling. I tried to find a solution in MSDN, but it messed up my mind.
Please discuss the matter in a simple way.

Microsoft Development Environment
An unhandled exception of type 'System.ComponentModel.LicenseException' occurred in chartfx.dll
Additional information: Couldn't get Run Time license for 'SoftwareFX.ChartFX.Chart
Break Continue Ignore Help
Regards,
Chayna
