In the MultipartStream class, both methods readBytes() and makeAvailable() contain the statement: notifier.noteBytesRead(bytesRead); I simply added a check for null: if (notifier != null) { | notifier.noteBytesRead(bytesRead); | } To apply this patch: 1) download the fileupload 1.2 source 2) Edit the MultipartStream.java source file 3) Compile only that Java source file, placing the commons fileupload jar in the classpath (you will get 5 class files - there are 4 embedded classes) 4) Replace the existing MultipartStream class files in the jar file with the newly compiled ones. 5) Place the updated jar file into the portal's lib directory. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4140258#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...