RQM : Importing Test Scripts using Excel Importer

In RQM V4.0.2 our users are trying to import but getting ERROR 500 when they try and import more than 1 record.

I am sure the issue is with the cfg file but i cannot figure it out. Does anyone have any suggestions?

CFG -
// This configuration file creates a test case with each test script and links them.
//Also there is a singular testsuite created that has all of the testcases in it.


// Start looking for scripts after row 2
testscript.XLSStartRow=5

// use the data in the first row of a found script's column B
testscript.XLSArtifactID=B
testscript.dc:title=B
testscript.dc:description=C

// the literal "execution" will be put into the step type tag, so all steps will be of type execution
testscript.steps.type="execution"
testscript.steps.description=E
testscript.steps.title=D
testscript.steps.name=D
testscript.steps.expectedResult=F

// a new script starts when we encounter an empty row
testscript.XLSDelimeter=\n
   
// we want to use the data we got for each test script to create a test case
testcase.ID=testscript.XLSArtifactID

// by refering to the testscript's field instead of the column that data comes from
// the tool will also create links to each of the test scripts.
testcase.dc:title=testscript.dc:title
testcase.dc:description=testscript.dc:description

testsuite.dc:title=B1
testsuite.dc:description=B2
testsuite.XLSLink=testcase


Spreadsheet -