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java.io.IOException: Not in GZIP format at java.util.zip.GZIPInputStream.readHeader(GZIPInputStream.java:137) at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:58) at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:68) at org.netbeans.modules.autoupdate.updateprovider.AutoupdateCatalogParser.getInputSource(AutoupdateCatalogParser.java:176) at org.netbeans.modules.autoupdate.updateprovider.AutoupdateCatalogParser.getUpdateItems(AutoupdateCatalogParser.java:148) at org.netbeans.modules.autoupdate.updateprovider.AutoupdateCatalogProvider.getUpdateItems(AutoupdateCatalogProvider.java:110) at org.netbeans.modules.autoupdate.services.UpdateUnitFactory.appendUpdateItems(UpdateUnitFactory.java:170) at org.netbeans.modules.autoupdate.services.UpdateUnitFactory.getUpdateUnits(UpdateUnitFactory.java:140) at org.netbeans.modules.autoupdate.services.UpdateManagerImpl$Cache.<init>(UpdateManagerImpl.java:222) at org.netbeans.modules.autoupdate.services.UpdateManagerImpl.getCache(UpdateManagerImpl.java:196) at org.netbeans.modules.autoupdate.services.UpdateManagerImpl.getUpdateUnits(UpdateManagerImpl.java:93) at org.netbeans.api.autoupdate.UpdateManager.getUpdateUnits(UpdateManager.java:100) at org.netbeans.modules.autoupdate.ui.PluginManagerUI.refreshUnits(PluginManagerUI.java:537) at org.netbeans.modules.autoupdate.ui.PluginManagerUI.updateUnitsChanged(PluginManagerUI.java:585) at org.netbeans.modules.autoupdate.ui.UnitTab$3.updateUnitsChanged(UnitTab.java:187) at org.netbeans.modules.autoupdate.ui.UnitCategoryTableModel.fireUpdataUnitChange(UnitCategoryTableModel.java:275) at org.netbeans.modules.autoupdate.ui.UnitTab.fireUpdataUnitChange(UnitTab.java:552)[catch] at org.netbeans.modules.autoupdate.ui.UnitTab$11$1.run(UnitTab.java:683) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209) at java.awt.EventQueue.dispatchEvent(EventQueue.java:597) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161) at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)