Need help restoring explorerframe.dll

Hey, I recently downloaded a cool theme and I replaced explrorerframe.dll. I then deleted after a restart, when I saw that it was running fine. I noticed 1 annoying error though, there was no navigation pane in the “Open” and “Close” windows. So, I went into Recuva to get the old DLL back. I got it and used replacer to replace them. I then restarted. It doesn’t recognize the DLL and it says it is missing now. I think it’s because I got it from recuva. But I can’t replace it because it says the file doesn’t exist even though I can see it right there. Please help me! I want to fix the problem, but not do a restore or Windows repair (since those will ruin all my settings like last time)