How to interpret an errorstack

[Hatzistavrou Giannis]

Hi all,

I am trying to run a procedure and it always return a 1861 oracle error.
In order to check where the problem exists I have added an event in the
init.ora parameter
(event="1861 trace name errorstack level 10").
The trace file was produced ok but I don't have a clue what to look for. May
some one of you help me 
find my way through!
 <<ora_60183.zip>> 

THANKS

Hatzistavrou Yannis

ora_60183.zip