I am using the sample C# SDK for using the Forge Derivative service and viewer. I\'ve been successful with using any document but not with PDF. All the PDF\'s I\'ve tried, trans
I just bumped into this myself. Please try with ViewingApplication object for initialization instead of basic viewer. The way shown in Basic Viewer requires additional configuration values from the manifest.
https://developer.autodesk.com/en/docs/viewer/v2/tutorials/basic-application/