PDFCreator stuck when run through TaskScheduler

Hi,

We're having an application (VS2005, C#) which runs on WS 2003 Rs SP2. the application starts the PDFCreator and prints documents etc.

Starting pdfcreator as follows:

_PDFCreator =

new PDFCreator.clsPDFCreator();

parameters =

 

"/NoProcessingAtStartup";_PDFCreator.cStart(parameters,true)This works perfecty fine when running the application manually . The issue is, I have to run it continuously and thats why it is defined in the TaskScheduler. Until two weeks ago this worked ok, but suddenly the application hangs at

_PDFCreator.cStart(parameters,true)

Nothing happens, and also a try - catch doesnt give any results; it just hangs there. It might has to do something with permissions, but until now nothing has been found. Did someone encounter a similar issue? I also checked for DCOM issues, but everything was declared ok. Also Data Prevention Execution has been defined to allow for pdfcreator.exe + spooler. Also the user who runs the app can fully mange the pdfcreator. I tried to run the app also from account with Admin rights but to no avail. Did anyone encounter such a problem and how was it solved? Thanks, Alain