Sorry I'v been away from it... The exception is actually generated from a function in the .NET Framework font class. It appears to be trying to load a new font object. That is about all I can see in the Framework. The error only appears to happen when I try to instantiate the TChart object using TCh...

I have been having a consistent problem in my application which mixes a number of different thchnologies, older COM components with .NET C# assemblies, and TeeChart 5 and TeeChart for .NET in the same application. Under many circumstances when a new chart is instantiated I get an arithmetic overflow...