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Created attachment 113345 [details] Screenshot about invalid platform with disabled buttons I downloaded the code from the NetBeans7 book at http://www.galileocomputing.de/katalog/buecher/titel/gp/titelID-2620 and tried to compile the demo modules. Actually I cannot compile most of the modules and get the following error in the Output window: C:\Users\Franz\Downloads\NetBeans Buch\Beispiele\05\MP3 Manager\build.xml:7: The following error occurred while executing this line: C:\Users\Franz\Downloads\NetBeans Buch\Beispiele\05\MP3 Manager\nbproject\build-impl.xml:19: You must define 'nbplatform.default.harness.dir' When checking the project properties > Libraries I see that an invalid Platform seems to be selected (see attached screenshot). I guess this is the original source of the problem. Unfortunately I just see THAT the platform is invalid - but why am I not allowed to change the platform? I'd expect that I could assign the platform if it is configured in a wrong way.
Maybe you are missing the default platform in Tools > NetBeans Platforms? Should not happen unless you have a corrupt IDE installation. I do not see downloads listed from the page you mentioned; looked for "beispielen" or similar (excuse my very rusty German!).
Created attachment 113381 [details] My Plaform config That's my platform config. When I'm developing my own platform module it works quite fine. When using this downloaded example, I cannot compile the example and get the screenshot given before. Even though I do not get an NPE, could it be realted to Bug #205324 ? A wrongly onfigured platform which cannot be reassigned manually?
(In reply to comment #2) > When I'm developing my own platform module it works quite fine. > > When using this downloaded example, I cannot compile the example and get the > screenshot given before. Maybe something wrong with the project then. Without access to it I cannot say. > Even though I do not get an NPE, could it be related to Bug #205324 ? Probably.