Check your data file I think this is the issue with data only, not qlikview. Reload both the files in different versions and check whether it is different in both the versions. If it is different then share the sample data and script file you are using.
I agree with Jagan. Further, you can get this type of error if the quoting is misinterpreted (if you have an unmatched quote in a field of if a quoted field contains the separator character). Try the different quoting options to see if it makes a difference.