Frans, the only place where you get a full stack trace following an error is Errors.txt.

This will only be written to when there's a terminating exception.

There are some traces in \IMan\config\appconfig.xml which can be set to True and these will write to various trace files in the \IMan\debug folder.

If you enable these, ensure they're disabled in a production system. Due to the verbosity the likelihood of generating an extreme log file is high and you will end up with IMan crashes & some weird errors.

Thanks