How to use eclipse to edit the tpl file of smarty

How to use eclipse to edit the tpl file of smarty? I used eclipse3.4, and set file associations and types. but why can't I open the. tpl file? Always prompt Couldnotopentheeditor: Editorcouldnotbeinitialized. ja how to use eclipse to edit the smarty tpl file?
I used eclipse3.4, and set file associations and types. but why can't I open the. tpl file?
Always prompt
Cocould not open the editor: Editor cocould not be initialized.

Java. lang. NoSuchMethodError: org.eclipse.php.internal.core.doc umentModel. parser. PhpLexer. getYy_buffer () [C
At org.eclipse.php.smarty.internal.core.doc umentModel. parser. SmartyTokenizer. doScanEndPhp (SmartyTokenizer. java: 845)
At org.eclipse.php.smarty.internal.core.doc umentModel. parser. SmartyTokenizer. primGetNextToken (SmartyTokenizer. java: 2372)
At org.eclipse.php.smarty.internal.core.doc umentModel. parser. SmartyTokenizer. getNextToken (SmartyTokenizer. java: 1144)
At org. eclipse. wst. xml. core. internal. parser. XMLSourceParser. getNextRegion (XMLSourceParser. java: 180)
At org.eclipse.php.smarty.internal.core.doc umentModel. parser. SmartySourceParser. parseNodes (SmartySourceParser. java: 84)
At org. eclipse. wst. xml. core. internal. parser. XMLSourceParser. getDocumentRegions (XMLSourceParser. java: 164)
At org. eclipse. wst. sse. core. internal. text. StructuredDocumentReParser. _ core_reparse_text (StructuredDocumentReParser. java: 309)
At org. eclipse. wst. sse. core. internal. text. StructuredDocumentReParser. core_reparse (StructuredDocumentReParser. java: 708)
At org. eclipse. wst. sse. core. internal. text. StructuredDocumentReParser. reparse (StructuredDocumentReParser. java: 1352)
At org. eclipse. wst. sse. core. internal. text. StructuredDocumentReParser. reparse (StructuredDocumentReParser. java: 1284)
At org.eclipse.php.internal.core.doc umentModel. parser. PhpStructuredDocumentReParser. reparse (PhpStructuredDocumentReParser. java: 81)
At org. eclipse. wst. sse. core. internal. text. BasicStructuredDocument. updateModel (BasicStructuredDocument. java: 2708)
At org. eclipse. wst. sse. core. internal. text. BasicStructuredDocument. internalReplaceText (BasicStructuredDocument. java: 1925)
At org. eclipse. wst. sse. core. internal. text. BasicStructuredDocument. replaceText (BasicStructuredDocument. java: 2414)
At org. eclipse. wst. sse. core. internal. text. BasicStructuredDocument. set (BasicStructuredDocument. java: 2930)
At org. eclipse. core. internal. filebuffers. ResourceTextFileBuffer. setDocumentContent (ResourceTextFileBuffer. java: 580)
At org. eclipse. core. internal. filebuffers. ResourceTextFileBuffer. initializeFileBufferContent (ResourceTextFileBuffer. java: 290)
At org. eclipse. core. internal. filebuffers. ResourceFileBuffer. create (ResourceFileBuffer. java: 241)
At org. eclipse. core. internal. filebuffers. TextFileBufferManager. connect (TextFileBufferManager. java: 112)
At org. eclipse. ui. editors. text. TextFileDocumentProvider. createFileInfo (TextFileDocumentProvider. java: 557)
At org. eclipse. ui. editors. text. TextFileDocumentProvider. connect (TextFileDocumentProvider. java: 476)
At org. eclipse. ui. texteditor. AbstractTextEditor. doSetInput (AbstractTextEditor. java: 3991)
At org. eclipse. ui. texteditor. StatusTextEditor. doSetInput (StatusTextEditor. java: 190)
At org. eclipse. ui. texteditor. AbstractDecoratedTextEditor. doSetInput (AbstractDecoratedTextEditor. java: 1325)
At org. eclipse. ui. editors. text. TextEditor. doSetInput (TextEditor. java: 165)
At org. eclipse. wst. sse. ui. StructuredTextEditor. doSetInput (StructuredTextEditor. java: 1954)
At org. eclipse. ui. texteditor. AbstractTextEditor $ 19.run( AbstractTextEditor. java: 3026)
At org. eclipse. jface. operation. ModalContext. runInCurrentThread (ModalContext. java: 458)
At org. eclipse. jface. operation. ModalContext. run (ModalContext. java: 366)
At org. eclipse. jface. window. ApplicationWindow $ 1.run( ApplicationWindow. java: 758)
At org. eclipse. swt. custom. BusyIndicator. showWhile (BusyIndicator. java: 70)
At org. eclipse. jface. window. ApplicationWindow. run (ApplicationWindow. java: 755)
At org. eclipse. ui. internal. WorkbenchWindow. run (WorkbenchWindow. java: 2487)
At org. eclipse. ui. texteditor. AbstractTextEditor. internalInit (AbstractTextEditor. java: 3044)
At org. eclipse. ui. texteditor. effecacttexteditor. init (AbstractTextEditor. java: 3071)

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