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This bug was originally marked as duplicate of bug 187882, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related. Build: NetBeans IDE 8.0.1 (Build 201408251540) VM: Java HotSpot(TM) 64-Bit Server VM, 25.25-b02, Java(TM) SE Runtime Environment, 1.8.0_25-b18 OS: Windows 8 User Comments: GUEST: JOptionPane.showMessageDialog Is Showing red line...why??? Stacktrace: java.lang.IllegalArgumentException: failed to parse:application/x-java-openide-nodednd;class=org.openide.nodes.Node;mask=? at java.awt.datatransfer.DataFlavor.<init>(DataFlavor.java:475) at org.openide.nodes.NodeTransfer.createDndFlavor(NodeTransfer.java:129) at org.openide.nodes.NodeTransfer.transferable(NodeTransfer.java:147) at org.openide.nodes.AbstractNode.clipboardCopy(AbstractNode.java:473) at org.openide.loaders.DataNode.clipboardCopy(DataNode.java:631) at org.openide.nodes.AbstractNode.drag(AbstractNode.java:495)
Created attachment 151233 [details] stacktrace
Fix: core-main #d2206adcf2a4 Changeset: d2206adcf2a4 Message: Replacing the MessageFormat with a simple String concatenation. Using MessageFormat for this simple case looks like an overkill and evidently does not work in all times.
Integrated into 'main-silver', will be available in build *201503050001* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress) Changeset: http://hg.netbeans.org/main-silver/rev/d2206adcf2a4 User: Ondrej Vrabec <ovrabec@netbeans.org> Log: Replacing the MessageFormat with a simple String concatenation. Using MessageFormat for this simple case looks like an overkill and evidently does not work in all times. Task #249481 - IllegalArgumentException: failed to parse:application/x-java-openide-nodednd;class=org.openide.nodes.Node;mask=?
*** Bug 254234 has been marked as a duplicate of this bug. ***