Assertion fails in loadui but not in soapui

I think I'm closing in on the answer now. I've found that after I created a new project in the latest version of SOAPUI Pro (Don't know if this is significant) that the test runs via loadui successfully, once. It then starts failing again. I though this may be due to the fact that although I think I'm using different data in each request from an excel file, it's actually failing to read the next row in. So I tested the theory using a Grid of 4-5 values. This worked fine via LoadUI. So for some reason the same value is being accessed each time when I use the excel data source, even though I have the following settings for the data source



Any help would be appreciated.

Also I still can't get the actual response output from any of the table logs. If I can nail these issues then I'm well away!