Error in Transfer G/L Account data to Ms. Excel

I’ve got problem when transfer G/L Account data to Ms. Excel. the error is " [Navision software a/s][Navision Financials ODBC Driver]Unknows Error ". For Information, When my data was not large, I mean about 50,000 kb, I’ve got no problem, but when my data more than 60,000 kb, I’ve got that error message, When transfer to Ms. Excel, I used C/ODBC 32 bit. I think this C/ODBC-Navision can not handle more than 60,000 kb data, How’s your oppinion about this? Thanks