NAV and Integration Designer (DataRefresher.exe) / FRx

I am having a lot of trouble to import all my 64 companies in FRx. The importation works fine when I run it manually, however when I scheduled to run it at any time, the data refresher service (datarefresher.exe) stops to import the data when it reachs the company 40 (see below the last message in the Windows Event Viewer).

Event Type: Information
Event Source: LoadPassStarted
Event Category: None
Event ID: 0
Date: 9/24/2010
Time: 7:06:33 PM
User: N/A
Computer: SQLMain
Description:
Load pass 40 of 62 started at 09/24/2010 19:06:33

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

Nothing happen after that message and I have to kill the service and run the entire process manually through the Integration Designer interface.

Does someone ever had that problem ?

Thanks