com.adventnet.workengine.task.TaskExecutionException

com.adventnet.workengine.task.TaskExecutionException

Hi,
My system return this error for several schedules used to update a form. I don't understand what happened, it was working fine last month. Who can help me?
 
To explain:
I've got a form A and a form B. I import datas in the form B (6200 records) and I use this records to update monthly the records in the form A (6200 records too). Because of the limit of executable statements per deluge action, I use form schedules delayed in time (2 minutes) to detect the import of data and update some fields values to the form A. If someone has a better solution....
 
Thanks
 
Fabrice