wireless router FTP problems!!!!!!

So I recently hooked up a D-link router and now my downloads on FTP sites keep stopping! I get this message:

Connection closed. Timeout (20s).
ABOR
426 Data connection: Transport endpoint is not connected.
225 ABOR command successful.

I dont know what is wrong, if it is my router settings or some setting in SmartFTP that I got mixed up. Anyways, any help would be very much appreciated.