What is the error you are getting?
Have you checked the file you are trying to load to make sure that there is nothing in there that causes the error - like a comma in a text field within a CSV file ?
How are you loading the data ?
do you have any scripts that are being used (see the first link in my signature below for supplying the information).
Is it possible to see the data - I appreciate that it might be company / individual sensitive so this won't be possible?
Might help if you read the second link in my signature - it's long but following the ideas there you might answer your own question when you try to rationalise the problem
-------------------------------Posting Data Etiquette - Jeff Moden Smart way to ask a question
There are naive questions, tedious questions, ill-phrased questions, questions put after inadequate self-criticism. But every question is a cry to understand (the world). There is no such thing as a dumb question. ― Carl Sagan
I would never join a club that would allow me as a member - Groucho Marx