Unable to open script file Floaters:history:history.js (error 2)

ever since upgraded dw vers 16.1.2.7884 have been getting following message @ startup.

i read few of other forum questions can't seem find answer one.does have workspace in dw?

does know hot cure this.

 

thanks much

i should mention too...i followed mapping in dreamweaver's app folder configuration->floaters-> there's no file in floaters folder word "history" in name.

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