Hi Shawn,
Thank you for sharing the details.
Kindly use the latest version of Aspose.Pdf v6.8 and change the operator as mentioned below.
//using GSave operator: this operator saves current graphics state
Aspose.Pdf.Operator.GSave() instead of q Operator
//using ConcatenateMatrix operator: defines how image must be placed
Aspose.Pdf.Operator.ConcatenateMatrix(matrix) instead of cm
//using GRestore operator: this operator restores graphics state
Aspose.Pdf.Operator.GRestore() instead of Q Operator
For more details about some changes in operators, please visit: [Some changes in Operator class names](https://blog.aspose.com/2012/02/16/some-changes-in-operator-class-names)
Also, we will update our documentation with the latest update soon. Sorry for the inconvenience.
Thanks & Regards,