[news.eclipse.platform.rcp] Error launching RCP in Mac OS X

["Tom" <trainer@xxxxxxxxxxxxxxxxxxxxx>]

I made an RCP application with Eclipse 3.1 on Windows XP. This
application is launched with Java Web Start. All works fine on windows
and Linux but not with Mac OS X. The appplication starts but when i
wan't to use the application SWTErrors appears like that:


org.eclipse.swt.SWTException: Invalid thread access
        at org.eclipse.swt.SWT.error(SWT.java:2860)
        at org.eclipse.swt.SWT.error(SWT.java:2783)
        at org.eclipse.swt.SWT.error(SWT.java:2754)
        at org.eclipse.swt.widgets.Widget.error(Widget.java:554)
        at org.eclipse.swt.widgets.Widget.checkWidget(Widget.java:305)
        at org.eclipse.swt.widgets.Control.isEnabled(Control.java:1218)
        at org.eclipse.swt.widgets.Display.mouseProc(Display.java:2517)


I read that -XstartOnFirstThread must be specified in VM argument so i
do that in my JNLP file but with no result....


Please help me if you have a solution. Thanks!!