Please delete your winfilecache .dat file with DW closed. That will fix these errors. It is a problem with the cached version not matching after updates and a false error being reported by DW.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.