Illegal Operation

keep on poping

Hey guys got this problem don’t know what to do & am in a middle of a project this dialog box keep on poping n-track caused an illegal operation.

NTRACK caused an exception 10H in module ECHO.DLL at 017f:023880ec.
EAX=00e0ba34 CS=017f EIP=023880ec EFLGS=00010202
EBX=00000002 SS=0187 ESP=03d2fe78 EBP=03d2ff08
ECX=00000000 DS=0187 ESI=00dd5b2c FS=5d37
EDX=00dd72bc ES=0187 EDI=00c0cfe4 GS=12ee
Bytes at CS:EIP:

please HELP!!!
dc 8c ce 88 01 00 00 d8 c1 dc 8c ce 70 01 00 00
Stack dump:
00000001 00dd5a8c 00e76100 7800100f 00000e00 000008e9 00000e00 00000000 bff7b77b 00000002 00000000 00000000 00007000 00000000 ffffff86 ffffff86

I had traced the problem and it’s from a plug-in, N-track Echo i removed it and the problems gone. But why does that happen on this particular song cause on the other songs the plug-in is there but the dialog box does not appear?