I believe that port is already in use. To confirm:

open cmd (windows + r -> cmd -> Press return on your keyboard)

then type the following command and press enter.

netstat -anon | findstr 62556

If it returns anything that port is already in use

If thats the case you can safely change the port by adding the line into corgicoin.conf

port=xxxxx

where xxxxx is a number from 1000 - 65535