I am using version 25.2.1 of GroupDocs.Conversion. When I attempt to convert a ICO file to PDF, I get the following stack trace:
java.lang.RuntimeException: class com.groupdocs.conversion.exceptions.FileTypeNotSupported…...pptx, ppsx, odp, otp, potx, potm, pptm, ppsm, fodp, ps, pcl,...