The current prerelease package of PdfSharp (1.50.4000-beta3b) fixes support for Acrobat 6 istreams; unfortunately they reorganized their assemblies and from now on the needed assembly has a "-gdi" postfix in the name (same for Migradoc), so HtmlRenderer.PdfSharp pulls in the wrong dependency.
A prerelease package of HtmlRenderer.PdfSharp depending on PdfSharp-gdi >= 1.50.4000-beta3b would fix this; and is needed anyway going forward.
A prerelease package of HtmlRenderer.PdfSharp depending on PdfSharp-gdi >= 1.50.4000-beta3b would fix this; and is needed anyway going forward.