Hi Laura,
This is your profile status window I will try to reply here but would suggest to open a new thread for further communication.
The translation of your error is:
The value can not be null. Name of the parameter: s
-Is there a parameter called 's' that is not getting any value when you run it from the Control Room?
-What type of application is it - Web, Desktop, etc.
-At which stage does it throw the error
