Issue with Analysis Office Add in

Hi,

User are having an issue with Analysis Office and giving the error.

From Analysis Office-> Open workbook->after Login to AO using BW connection

After opened the report ->when refresh the report, getting the error

"An Exception occurred in one of the data sources. SAP BI Add in has disconnected

Nested Exception. See inner exception below for more details

Initial RANGE-LOW for customer exit variable ****_EXIT_001 corrected ..

Under details

An exception has occurred in one of the data sources.

SAP BI Add-in has disconnected all data sources.(ID-111007)

We are using BO AO for MS Office Add-in 1.4 SP3 in BO server.

Please let me know the reason for this error and how to fix this.

Thanks in advance.

Jayakrishna