An error occurred; could not precalulcate instance 2509172 : Error duirng precalculation

Hi,

Getting below error while scheduling Analysis for Office at BI Launchpad, any thoughts ? The

Error Message: An error occurred; could not precalulcate instance 2509172 : Error during precalculation; general exception occurred
I tried in AO 32 bit 2.7 & AO 64bit 2.8 versions and both got same error.
Regards,Kiran