Configuring IPsec - error "used the isakmp port"

Dear I am having my first experience using IPsec, but have not got a exito.Tenho RB1100 in version 5.6 and need to close the tunnel with a Cisco ASA, I have set up a tunnel using pptp with another RB when active and IPsec to connection to the Cisco ASA, I am receiving many messages in the log type: ipsec, debug 192.168.1.1 [500] used the isakmp port (fd = 36) and is not established any connection between the endpoints. In case my question is whether this error has to do with the tunnel that already have established. Cause I need IPSec and PPTP tunnel running on the same machine if possible of course.

Note: To perform the configuration information used in the following link: http://wiki.mikrotik.com/wiki/Manual:IP/IPsec

Since I am already grateful for the attention.

Thank you all for your attention, because the problem was solved by modifying the ip address on the tip of the Cisco ASA that was wrong.

thanks for sharing the solution