<html><head></head><body><div style="font-family: Verdana;font-size: 12.0px;"><div>Experiencing the same problem in Buster with a vanilla installation, but probably with a different cause.</div>
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<div>Using jabref 3.8.2+ds-12, jabref is unable to connect to libreoffice automatically or manually.</div>
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<div>I see this output from jabref when I attempt to connect:</div>
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<div>java.lang.ClassCastException: class jdk.internal.loader.ClassLoaders$AppClassLoader cannot be cast to class java.net.URLClassLoader (jdk.internal.loader.ClassLoaders$AppClassLoader and java.net.URLClassLoader are in module java.base of loader 'bootstrap')<br/>
at net.sf.jabref.gui.openoffice.OpenOfficePanel.addURL(OpenOfficePanel.java:484) ~[JabRef-3.8.2.jar:?]<br/>
at net.sf.jabref.gui.openoffice.OpenOfficePanel.connect(OpenOfficePanel.java:419) ~[JabRef-3.8.2.jar:?]<br/>
at net.sf.jabref.gui.openoffice.OpenOfficePanel.lambda$initPanel$0(OpenOfficePanel.java:141) ~[JabRef-3.8.2.jar:?]<br/>
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1967) ~[?:?]<br/>
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2308) ~[?:?]<br/>
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:405) ~[?:?]<br/>
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:262) ~[?:?]<br/>
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:279) ~[?:?]<br/>
at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:297) ~[?:?]<br/>
at java.awt.Component.processMouseEvent(Component.java:6632) ~[?:?]<br/>
at javax.swing.JComponent.processMouseEvent(JComponent.java:3342) ~[?:?]<br/>
at java.awt.Component.processEvent(Component.java:6397) ~[?:?]<br/>
at java.awt.Container.processEvent(Container.java:2263) ~[?:?]<br/>
at java.awt.Component.dispatchEventImpl(Component.java:5008) ~[?:?]<br/>
at java.awt.Container.dispatchEventImpl(Container.java:2321) ~[?:?]<br/>
at java.awt.Component.dispatchEvent(Component.java:4840) ~[?:?]<br/>
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4918) ~[?:?]<br/>
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4547) ~[?:?]<br/>
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4488) ~[?:?]<br/>
at java.awt.Container.dispatchEventImpl(Container.java:2307) ~[?:?]<br/>
at java.awt.Window.dispatchEventImpl(Window.java:2772) ~[?:?]<br/>
at java.awt.Component.dispatchEvent(Component.java:4840) ~[?:?]<br/>
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:772) ~[?:?]<br/>
at java.awt.EventQueue$4.run(EventQueue.java:721) ~[?:?]<br/>
at java.awt.EventQueue$4.run(EventQueue.java:715) ~[?:?]<br/>
at java.security.AccessController.doPrivileged(Native Method) ~[?:?]<br/>
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85) ~[?:?]<br/>
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:95) ~[?:?]<br/>
at java.awt.EventQueue$5.run(EventQueue.java:745) ~[?:?]<br/>
at java.awt.EventQueue$5.run(EventQueue.java:743) ~[?:?]<br/>
at java.security.AccessController.doPrivileged(Native Method) ~[?:?]<br/>
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85) ~[?:?]<br/>
at java.awt.EventQueue.dispatchEvent(EventQueue.java:742) ~[?:?]<br/>
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203) [?:?]<br/>
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124) [?:?]<br/>
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113) [?:?]<br/>
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109) [?:?]<br/>
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) [?:?]<br/>
at java.awt.EventDispatchThread.run(EventDispatchThread.java:90) [?:?]</div>
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<div>JabRef was able to connect to LibreOffice fine for me in Stretch.</div>
<div> </div>
<div>Thanks,</div>
<div>Gary</div>
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