process chain problem

Hi

I am running with issue with my process chain.I have created a simple PC to understand if it works or not .I am trying to load data from Flat file ( locted on client workstation) to cube .So i have created PC with delete index, load data,create Index ,DB statistics,delete overlapping request from the cube,roll up and collapse.

The cube is having the data already and having aggregate also.

But when I run the process chain to load the new data , I am getting the following error.

when I went to goto>>>Job overview>>>>execute I am having the following errror

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>.

ABAP run time error..."An SQL error occurs when activating native SQL"

and second is given below

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Job or process BI_PROCESS_LOADING, waiting for event is unknown

Message no. RSPC002

Diagnosis

Job BI_PROCESS_LOADING has been started because of event . This job is not, however, known in the active version of the process chain.

System response

The job has been terminated.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Pl tell me how can I rectify this error?If I load the data without PC its getting loaded easily.

Pl help

KK