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I had last opened the project with the 7.4 dev version. Then I uninstalled the dev version before installing 7.4 final. All on the same computer. When building the project, I get an error: nbproject\build-impl.xml:797: The libs.CopyLibs.classpath property is not set up. This appears to be caused by entries in private.properties pointing to the old uninstalled dev version: deploy.ant.properties.file=C:\\Documents and Settings\\name\\Application Data\\NetBeans\\dev\\config\\GlassFishEE6\\Properties\\gfv3-2122326925.properties j2ee.platform.is.jsr109=true j2ee.server.domain=C:/Program Files/glassfish-3.1.2.2/glassfish/domains/domain1 j2ee.server.home=C:/Program Files/glassfish-3.1.2.2/glassfish j2ee.server.instance=[C:\\Program Files\\glassfish-3.1.2.2\\glassfish;C:\\Program Files\\glassfish-3.1.2.2\\glassfish\\domains\\domain1]deployer:gfv3ee6wc:localhost:4848 j2ee.server.middleware=C:/Program Files/glassfish-3.1.2.2 javac.debug=true javadoc.preview=true selected.browser=default user.properties.file=C:\\Documents and Settings\\name\\Application Data\\NetBeans\\dev\\build.properties The user.properties.file location does not exist anymore. I have used this project between versions many times before, and it never failed. I would open the project on the same day in different IDE versions. I only found minor issues when I had the project open in two IDE versions at the same time. I guess this is a new bug in 7.4 where it fails to re-write the private.properties file with values that apply to the current IDE installation.
can you attach your IDE log file? AFAIK at least the user.properties.file property should be rewritten each time the project is opened in different IDE. http://wiki.netbeans.org/FaqLogMessagesFile
My apologies, I don't have a log file anymore. It is my fault. But to be honest, it does not matter whether it is my fault or not. The problem is that the number of log file generations is ridiculously low. IMHO we should let the computer do the work and not rely on humans to sort these things out. I have copied the whole project in its erroneous state, but just forgot to copy the log file. Please consider that these log files are deeply buried in the system, and I forget to copy it. So perhaps it is worth considering to increase the number of generations to something like 14 days minimum. To me this looks even more important than even this bug. I may be able to reproduce this by uninstalling 7.4 and re-installing the dev version. Of course I am not sure about that.
unfortunately whenever I open a project from different version of netbeans, the private properties are properly updated for me. Without steps to reproduce and/or the log (which could show some exceptions logged that caused the failure) I cannot do much. if the problem persists, you can fix the problem yourself manually by updating the user.properties.file property in the nbproject/private/private.properties file. closing as worksforme, please reopenen with any additional comments