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Yet another duplicate of Issue 150034. Build: NetBeans IDE Dev (Build 200902231810) VM: Java HotSpot(TM) Client VM, 11.0-b15, Java(TM) SE Runtime Environment, 1.6.0_10-b33 OS: Windows XP, 5.1, x86 User comments: startup STACKTRACE: (first 10 lines) 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)
*** This issue has been marked as a duplicate of 150034 ***