Here try this:
https://drive.google.com/file/d/0B2C9imTzrNGyNDRRNjFwNGdCTDg/edit?usp=sharingI put my MT4 build 509 terminal.exe in a zip file for you. I think if you just swap-in this, you will be on build 509 and it may also recognize all your settings.
If that doesn't work, I can zip up the entire MT4 folder. This is from IBFX but it should work with any broker if you adjust the server settings.