java.io.FileNotFoundException: FileObject C:\ws-netbeans\cs454a2\newmain1.c is not valid.
        at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObj.getInputStream(FileObj.java:137)
        at org.openide.text.DataEditorSupport$Env.inputStream(DataEditorSupport.java:689)
        at org.openide.text.CloneableEditorSupport.loadDocument(CloneableEditorSupport.java:2027)
        at org.openide.text.CloneableEditorSupport.access$2800(CloneableEditorSupport.java:120)
        at org.openide.text.CloneableEditorSupport$Listener.run(CloneableEditorSupport.java:2833)
        at org.openide.text.CloneableEditorSupport$2.doRun(CloneableEditorSupport.java:649)
        at org.openide.text.CloneableEditorSupport$2.run(CloneableEditorSupport.java:618)
        at org.netbeans.editor.GuardedDocument.runAtomic(GuardedDocument.java:324)
        at org.openide.text.NbDocument.runAtomic(NbDocument.java:384)
        at org.openide.text.CloneableEditorSupport$2.doRun(CloneableEditorSupport.java:628)
        at org.openide.text.CloneableEditorSupport$2.run(CloneableEditorSupport.java:618)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:573)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1005)