Somehow you try to show either too many data or too complex data.
Does the same error incur, if only one (or very little) data is selected?
Are thre complicated formulae involved? Try to delete them one by one.
Similar with calculation of background-colours.
Does the report somehow tries to show results from cartesian product (like crosstable customer vs invoice-number, etc)?
I had this error earliar. When I was debug my data, I had a specail character(") in the data. So I just removed and tried , it was working fine.
The error message is totally different from the error. One small advantage is , the Qlikview stops the particular row number when the row has special character.
Hope, this will help.