GWD Open Project Problem

Hello!
I have a problem with GWD. I work with a laptop. I store my project very often. If I want the next day to open my project it is destroyed. I can not open the project. No error message. GWD freezes. If the sleep mode be to blame? If I open the Project via "File -> Open project" I get the following error message:

!SESSION Wed Apr 20 10:48:30 CEST 2016 -----------------------------------------
!ENTRY org.eclipse.equinox.launcher 4 0 2016-04-20 10:48:30.943
!MESSAGE Exception launching the Eclipse Platform:
!STACK
org.eclipse.swt.SWTError: No more handles
at org.eclipse.swt.SWT.error(SWT.java:4467)
at org.eclipse.swt.SWT.error(SWT.java:4356)
at org.eclipse.swt.SWT.error(SWT.java:4327)
at org.eclipse.swt.widgets.Widget.error(Widget.java:4 76)
at org.eclipse.swt.widgets.Control.internal_new_GC(Co ntrol.java:1718)
at org.eclipse.swt.graphics.GC.win32_new(GC.java:5063 )
at org.eclipse.swt.widgets.Control.new_GC(Control.jav a:2086)
at org.eclipse.swt.widgets.Widget.wmPaint(Widget.java :2298)
at org.eclipse.swt.widgets.Control.WM_PAINT(Control.j ava:5174)
at org.eclipse.swt.widgets.Label.WM_PAINT(Label.java: 615)
at org.eclipse.swt.widgets.Control.windowProc(Control .java:4667)
at org.eclipse.swt.widgets.Display.windowProc(Display .java:5036)
at org.eclipse.equinox.launcher.JNIBridge._takedown_s plash(Native Method)
at org.eclipse.equinox.launcher.JNIBridge.takeDownSpl ash(JNIBridge.java:167)
at org.eclipse.equinox.launcher.Main.takeDownSplash(M ain.java:2168)
at org.eclipse.equinox.launcher.Main$SplashHandler.ru n(Main.java:113)
at org.eclipse.core.runtime.adaptor.EclipseStarter.ru n(EclipseStarter.java:239)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknow n Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Un known Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework( Main.java:648)
at org.eclipse.equinox.launcher.Main.basicRun(Main.ja va:603)
at org.eclipse.equinox.launcher.Main.run(Main.java:14 65)

OS: Windows 10 x64
Laptop: Lenovo Thinkpad T440p

Please help me. I have created my project already four times again. :(:crying:

Thanks pjo12345

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