This is almost always caused by unfriendly characters in a users MFL user password (eg hashtag #, +, etc).
Our recommendation is to change your MyFantasyLeague password to a simply alpha/numerical only one while doing the upload from FanDraft to MFL.
However, this can also be caused by having Privacy settings set to off in MyFantasyLeague.
To resolve this issue:
- In MyFantasyLeague: Go to "FOR COMMISSIONERS > SETUP" in the top header bar.
- Then (in MFL) click on "Reports and Security Settings" (under the APPEARANCE SETUP area)
- Turn the "Prevent non-league members.." options to "NO"
- Click "Save Settings"
- In FanDraft: Re-attempt the upload