Failure when updating existing table

Failure when updating existing table

Hello. Love the DB tool. Very helpful.

I have run into an issue when trying to update records in an existing table. I am have a table with 10 existing columns and I am trying to append 5 new columns to the data. I select import and "add records and replace if already existing". I have ensured that two of my existing columns are present in the new file, along with the five new columns. I have selected to match on those fields to ensure the data is appended correctly.

The result is...
The system generates a failure saying that an error has occurred. It added the five additional columns to the table, but they are all blank. I have tried both import CSV as well as copy and paste CSV and XLS. I have also checked to make sure that no multi-line columns or lookup columns are being used in this table.

Can you help?