With the release of Java 7u25 came a change where, when the MANIFEST.MF file does not contain the "Permissions" and "Codebase" attributes, the program will give a runtime warning similar to this:

Missing Permissions manifest attribute for: http://www.codebase.com/codebasepath/dist/Program.jar
Missing Codebase manifest attribute for: http://www.codebase.com/codebasepath/dist/Program.jar

deploying platform project with > jnlp > build does not add propper attributes to manifests.

Netbeans should automatically add the proper attributes to the generated .jar's manifest. Currently, after a clean & build, the developer needs to complete a (confusing, difficult) process of adding the manifest attributes manually and re-sign the .jar and the library .jars, all manually as well.

I have found simmilar bug here: https://netbeans.org/bugzilla/show_bug.cgi?id=234231
but it related to simple java project, not netbeans rpc.