crash when i start forge

by jlpamate
when i try to start forge it crashed and i dont kow why, please help me¡¡
Description: [describe what you were doing when the crash occurred]
Description: [describe what you were doing when the crash occurred]
- ZipException | Open
- Code: Select all
Forge Version: 1.5.4-r23578
Operating System: Windows 7 6.1 x86
Java Version: 1.7.0_45 Oracle Corporation
EDT > Error loading Quest Data
java.util.zip.ZipException: Not in GZIP format
at java.util.zip.GZIPInputStream.readHeader(Unknown Source)
at java.util.zip.GZIPInputStream.<init>(Unknown Source)
at java.util.zip.GZIPInputStream.<init>(Unknown Source)
at forge.quest.io.QuestDataIO.loadData(QuestDataIO.java:123)
at forge.gui.home.quest.CSubmenuQuestData.update(CSubmenuQuestData.java:116)
at forge.gui.home.CHomeUI.itemClick(CHomeUI.java:52)
at forge.gui.home.CHomeUI.selectPrevious(CHomeUI.java:134)
at forge.gui.home.CHomeUI.initialize(CHomeUI.java:80)
at forge.control.FControl.setCurrentScreen(FControl.java:303)
at forge.view.FView.initialize(FView.java:153)
at forge.control.FControl$3.run(FControl.java:248)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$200(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)