AFC Wimbledon have been expelled from the FA Trophy for fielding an ineligible player - and opponents Gravesend & Northfleet are reinstated.
Darlington played for the "old" Wimbledon FC before joining Watford
The FA ruled that Dons midfielder Jermaine Darlington had not obtained international clearance after leaving Cardiff City last year.
The Dons won their second round tie at Gravesend 1-0 - but the Fleet will now face Rushden & Diamonds in round three.
Wimbledon must also repay £7,000 prize money from previous rounds.
A club statement read: "The decision is a consequence of an unfortunate administrative error and AFC Wimbledon is suffering a a result of an FA crackdown on such situations as evidenced by the sanctions imposed on Bury in relation to this season's FA Cup."
Bury were thrown out of the FA Cup after fielding an ineligible player in their second round tie against Chester - who were reinstated.
The FA decision is final and binding, and Wimbledon have no right of appeal.
However, the Dons have also been charged with a breach of Ryman League rules in relation to fielding Darlington in league games while he was ineligible.