Unfortunately you only get a line reference when the course fails once it's open. As barend notes there will be a malformed character somewhere. If you look at the file you might notice what it is. It can be something very minor.
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I've got an XML file (not from courselab)that has an error in it, seems to be an odd character somewhere after line 36,000.... That is proving difficult to find as there are a more than 50,000 lines remaining :(
Unfortunately you only get a line reference when the course fails once it's open. As barend notes there will be a malformed character somewhere. If you look at the file you might notice what it is. It can be something very minor.
+++
I've got an XML file (not from courselab)that has an error in it, seems to be an odd character somewhere after line 36,000.... That is proving difficult to find as there are a more than 50,000 lines remaining :(