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I downloaded PP3.0 bits (Build#172) and found Spring portlets has some dependency on Generic portlets. The expected version is 2.9 but the available version is 2.0.6. Due to this I'm not able to install the portalpack bits for testing PP3.0 in SDKU7. I tried will core.zip and all.zip. Find the screenshot attached for your reference
Created attachment 72439 [details] Screenshot
It's a netbeans plugin installer issue. http://www.netbeans.org/issues/show_bug.cgi?id=150610 Workaround : While installing portal pack plug-ins, uncheck Spring Portlet, Service Builder plugin and then install rest of the plugins. Once that's done, install Spring Portlet and Service Builder Plugin.
*** This issue has been marked as a duplicate of 150610 ***