There has been a recent change in API which caused license initialization routine to break when loading license from Stream instance. In order to mitigate this issue, a quick HotFix has been published. Please try using latest hotfix of Aspose.Pdf for Java 10.6.1. During PDF to DOC conversion, an issue related to open font files was also noticed but its been rectified in new hotfix. Likewise previous versions, this hotfix also contains New Features, Enhancements and Bug fixes introduced in previous release versions and this hotfix has been optimized for PDF to Image and PDF to DOC format conversion. We recommend you to please try using latest hotfix and should you have any query, please report the problem in Aspose.Pdf product support forum.