PHP exec a batch file terminates before compliting on IIS7

[arnonch]

Hi,

The website that I am making involves executing 3 batch files.
I am executing the batch files using the exec function.
When I test the website code on my personal PC with apach server, it is working fine
The execution of the 3 batch files is done one after the other just like it is supposed to do.

But I'm having a problem with executing the batch files on my VPS IIS7 server.
For some reason, the execution of the batch files terminates before it is over.
When I execute the batch files from CMD, they are working fine.

I tried to give more time in the max_execution_time (in the php.ini) but it did not make a different.
I tried to change the limits properties in the IIS manager but still I did not notice any difference.

I am new to windows server 2008 (my first time )

I have 2 questions:
1. Is there an error log for web sessions that logs web sessions and through that I will be able to see why the execution of the batch file terminated?
2. Has anyone encountered a problem like I described above?

Thanks for the help.

[arnonch]

I found the problem!!

It appears that if there are errors in the batch file, when calling it from exec it will terminate on the faulty line, while calling the batch from windows CMD the execution will continue!