Just loaded the v6.8 PDF dll against the PDF demo projects and got errors on all Image Operators. (See attached)
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
Also, we will update our documentation with the latest update soon. Sorry for the inconvenience.
Thanks & Regards,