BI 4.1 infospace migration error

Hi,

I have explorer infospace which i can index in my 3.1 environemnt. When I migrated this infospace to my 4.1 env. and tried re-indexing it, I am getting the below error msg-
Maximum character output size limit reached. Contact your BusinessObjects administrator. (Error: ERR_WIS_30272)

Any thoughts?

Thanks