ODI Studio got 'WARNING odi.core...InsertUpdateDeleteHandler.auditEvent() hit error:null'

Hi,
Can anybody help the issue?

I have Oracle DB 11gR2(11.2.0.3.0) SE and ODI 11g (11.1.1.7.0) installed on my laptop (Windows 7 64bit).

I am following doc 'http://www.oracle.com/webfolder/technetwork/tutorials/obe/fmw/odi/odi_11g/odi_project_ff-to-ff/odi_project_flatfile-to-flatfile.htm' using ODI Studio (Java 1.6.0_43).

I got the following warning message when I tried to define interface 'INT_exp_FT_FT'.

---

2013-04-19 11:43:38.780 WARNING odi.core...InsertUpdateDeleteHandler.auditEvent() hit error:null
2013-04-19 11:43:38.812 WARNING odi.core...InsertUpdateDeleteHandler.auditEvent() hit error:null
2013-04-19 11:43:38.812 WARNING odi.core...InsertUpdateDeleteHandler.auditEvent() hit error:null
2013-04-19 11:43:38.812 WARNING odi.core...InsertUpdateDeleteHandler.auditEvent() hit error:null