Datareport error

I have a datareport in my VB application. Every time I tried to open Datareport at run time, I get following error
"Sections do not fit vertically on the page"

All fields in my datareport are in either Report header or Page header. (I did not put them in Detail section b'cause fields keeps on repeating ). I tried to put all fields as close as possible but I still get the same errors."Cangrow" proprty of Three filelds at the bottom of the report is set to true. ( I need to have it that way because I dont always know the size of those fields) I assign a text value to all fields at run time. any suggestions?

Thanks in Advance!!!