SSMS not showing Attach Database/Locate Database Files Dialog DIR Tree.

Question

I am unable to Attach a Database in SSMS. The Locate Database Files Dialog text is frozen on a USB port folder that no longer exists. Even entering a dummy database file *.mdf, the OK button does not enable. When I tried to repair SSMS, Error message; (0x80070002) I could uninstall/reinstall, but would rather know what went wrong to prevent it happening again. Thank you.

Answer: I just pasted the filename and fullpath into the Filename text box, attached it, then exited and reopened and the tree was there.