IDE not opening after launch. Splash screen crashes after "starting..."


here error after running debugger in cmd

loading configuration...
initializing packages...
preparing boards...
starting...
java.lang.abstractmethoderror
        @ processing.app.editor.addtools(editor.java:945)
        @ processing.app.editor.buildtoolsmenu(editor.java:802)
        @ processing.app.editor.buildmenubar(editor.java:551)
        @ processing.app.editor.<init>(editor.java:256)
        @ processing.app.base.handleopen(base.java:869)
        @ processing.app.base.handleopen(base.java:854)
        @ processing.app.base.handleopen(base.java:850)
        @ processing.app.base.handlenew(base.java:745)
        @ processing.app.base.<init>(base.java:459)
        @ processing.app.base.guardedmain(base.java:223)
        @ processing.app.base.main(base.java:136)



does know might causing , how fix it? i've been looking online while , i've seen people have had similar problems solutions haven't been working me.

thanks in advance.

have redownloaded ide?
how running administrator?


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