.spf file appears to be corrupt and is asking for a password

Not applicable
06-28-2016
01:57 PM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report
I have an .spf file that asks for a password when I open it. No password has been set by the original creator. When I select Cancel I get an error message saying list index out of bounds -1
Thank you in advance for any help and advice. How can I recover this file? How can I disable the password?