If your config XML contains invalid XML (in my case, my passwords had unescaped ampersands, but I was able to reproduce with other XML errors), you receive an error SharePoint version (year) was not specified in..., instead of a more helpful message like "Unable to parse the XML".
If your config XML contains invalid XML (in my case, my passwords had unescaped ampersands, but I was able to reproduce with other XML errors), you receive an error
SharePoint version (year) was not specified in...
, instead of a more helpful message like "Unable to parse the XML".