I recommend you to update the Active Reports .NET 3.0 to the latest build.
It is available here:
Also, i would like to know the following details:
1) Does problem appear in windows forms application?
2) Is KeepTogether property of detail section set to "True"?
3) Did you try to set the ImageType property of chart control to "PNG" value?
What results do you get when the ImageType property of chart control is set to "PNG" value?
Did you install the latest build of Active Reports .NET 3.0 ?
Could you please send me VB. and .RESX files with report?
The reports you sent do not throw the GDI and argument exceptions on my machine.
The project with test is attached.
Try to comment out the code with markes and annotations for check.