I am using Apache fop-0.95 to build pdf files from a JSP web application on IBM iSeries V5R4 using Websphere 6.0. Everything works perfect in my development using Websphere Development Studio client. When I put the application on the server, I get an error at this line. FopFactory fopFactory = FopFactory.newInstance(); The error is: java.lang.UnsatisfiedLinkError: javax/imageio/ImageIO Does anyone know how I can fix this error? All of the fop class files are part of the EAR file. The files were installed to the projects \WEB-INF\lib directory. I have added the fop jar files to the classpath, using the admin console. I am running IBM WebSphere Application Server - Express, 6.0.2.9 Build Number: cf90614.22 on IBM iSeries V5R4