This error may happen with certain CSV files. Your file is likely improperly delimited at a particular location where you have an odd number of quotation marks. Namely, for every open quotation mark there must be a close quotation mark. This is the standard for CSV files and files which use text qualifiers.
When Delimit detects an odd number of quotation marks it has difficulty parsing the file from that point onward and may show this error. To be certain about this we would need to inspect the file in question. Please contact us for additional support.