it keeps asking me to download the latest version but I have it. how can I fix this?
What version number does it say at the bottom-right of the window/screen for you?
The latest is 0.1.6a; anything less/different, and you'll need to download the latest version from the page again.
If you've re-downloaded already, let me know which platform you downloaded - I'll double check and re-upload if needed
I'm not sure what would be causing that - it should only be checking the version on startup.
The only thing I could suggest other than deleting/re-downloading again, would be to make sure it's not being blocked by your firewall. If both of these don't work, let me know, and I'll see if I can track down the cause