Working soapUI testcase has many assertion errors in loadUI

I have quite a large functional testcase that works correctly in soapUI without error. I can run clones of the testcase in parallel without issue within soapui and furthermore I can use the loadtest feature within soapUI and everything works correctly.

However when i transfer my testcase to loadUI and run it I get many assertion errors, below is the output from the log:

"0","[[Check for existance of [smf:xxx]] XPathContains comparison failed, expecting [true], actual was [false]]","1291303351462","Cancelling due to failed test step"
"1","[[Check for existance of [smf:xxx]] XPathContains comparison failed, expecting [true], actual was [false]]","1291303353028","Cancelling due to failed test step"
"2","[[Match content of [xxx]] XPathContains comparison failed, expecting [true], actual was [false]]","1291303353469","Cancelling due to failed test step"
"4","[[Check for existance of [smfwsdl:xxx]] XPathContains comparison failed, expecting [false], actual was [true]]","1291303355476","Cancelling due to failed test step"
"5","[[Check for existance of [smf:xxx]] XPathContains comparison failed, expecting [true], actual was [false]]","1291303356647","Cancelling due to failed test step"
"6","[[Match content of [@int]] XPathContains comparison failed, expecting [1], actual was [2]]","1291303357480","Cancelling due to failed test step"
"7","[[Match content of [@int]] XPathContains comparison failed, expecting [1], actual was [0]]","1291303358499","Cancelling due to failed test step"
"8","[[Check for existance of [xxx]] XPathContains comparison failed, expecting [true], actual was [false]]","1291303359468","Cancelling due to failed test step"
"9","[[Check for existance of [smf:xxx]] XPathContains comparison failed, expecting [true], actual was [false]]","1291303360488","Cancelling due to failed test step"
"10","[[Match content of [@int]] XPathContains comparison failed, expecting [1], actual was [2]]","1291303361449","Cancelling due to failed test step"
"11","[[Match content of [@int]] XPathContains comparison failed, expecting [1], actual was [0]]","1291303362494","Cancelling due to failed test step"
"12","[[Match content of [@int]] XPathContains comparison failed, expecting [1], actual was [0]]","1291303363450","Cancelling due to failed test step"
"14","[[Match content of [xxx]] XPathContains comparison failed, expecting [true], actual was [false]]","1291303365450","Cancelling due to failed test step"
"15","[[Match content of [@int]] XPathContains comparison failed, expecting [1], actual was [2]]","1291303366511","Cancelling due to failed test step"
"17","[[Check for existance of [smf:xxx]] XPathContains comparison failed, expecting [true], actual was [false]]","1291303368471","Cancelling due to failed test step"
"16","[[Check for existance of [smfwsdl:xxx]] XPathContains comparison failed, expecting [false], actual was [true]]","1291303367458","Cancelling due to failed test step"
"18","[[Match content of [@int]] XPathContains comparison failed, expecting [1], actual was [2]]","1291303369432","Cancelling due to failed test step"
"20","[[Check for existance of [smf:id]] XPathContains comparison failed, expecting [true], actual was [false]]","1291303371506","Cancelling due to failed test step"

As well as these 'content' assertions I have one that just checks that a soap request receives a response, this is the first assertion for each request and they all pass (no response assertion errors in log).

The assumption that I currently have is that the soap requests are being sent and a response is being received but the response received in loadUI is different to that of soapUI obviously this could be because the request is different too. By different I mean maybe some of the content used in property transfers hasn't been generated/transferred correctly.

Is there anyway of getting a decent debug output from loadUI? I want to know what requests have been sent and what responses I've gotten so I can work out where its failing and fix it!

Or is this a common error and does anyone have a solution?

Any help would be greatly appreciated, cheers!