I've found the following exception stack trace in the Report Server log:
ERROR: Throwing Microsoft.ReportingServices.ReportProcessing.RenderingObjectModelException: , Microsoft.ReportingServices.ReportProcessing.RenderingObjectModelException: A generic error occurred in GDI+. ---> System.Runtime.InteropServices.ExternalException:
A generic error occurred in GDI+.
at System.Drawing.Image.Save(Stream stream, ImageCodecInfo encoder, EncoderParameters encoderParams)
at Microsoft.Reporting.Chart.WebForms.Chart.Save(Stream imageStream, ChartImageFormat format)
at Microsoft.ReportingServices.OnDemandReportRendering.ChartMapper.GetImage(ImageType imageType)
--- End of inner exception stack trace ---;
I've got no idea what this is, any help would be appreciated. I don't know what could potentially cause this, so I don't even know how to start looking for a fix.
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Other info:
SSRS 2012 BI
Win Server 2008 R2 (Running on Hyper-V)
The pdf report(s) renders and is saved to the location it is meant to, but devoid of any charts. A data driven subscription controls the rendering.