Error writing pandas data frame to sqlite table: only getting column headings instead of all the records

I'm trying to write a Pandas dataframe to a SQLite table but using to_sql keeps writing only the column headings instead of all of the records in the data frame.

import pandas as pd
import pandas.io.sql as pd_sql 
import sqlite3 as lite
rTable.to_sql("SQL_Table", con, flavor='sqlite', index=True, index_label="Index")   

Any ideas?