Online filing of itr 2

Each time I try uploading ITR 2, I get an error message "Invalid XML. Generate XML again using latest utility"

I am using Excel version and have generated XML file multiple times, but still getting this error while uploading tax return. I have been uploading the return for many years the same way, but this time I am unable to upload the return and unable to figure out the problem.

Can any one help please. Thanks in advance for your response.