what could be the causes for this Error

"Invalid at top level of document,line 3, column 59"I get this error when trying to display an XML file in browser window,I need to get an \advice from u guys that what are the possible causes for this error.
[243 byte] By [me_elf] at [2007-9-26 3:25:01]
# 1
would help if can post your xml document...
yue42 at 2007-6-29 11:45:24 > top of Java-index,Enterprise & Remote Computing,Enterprise Technologies...
# 2
My guess without seeing the document is there is no root element.Everything must be inside a root set of of tags. <?xml version="1.0"?><mydocument><other></other></mydocument>just my 2 cents.
Brunky at 2007-6-29 11:45:24 > top of Java-index,Enterprise & Remote Computing,Enterprise Technologies...
# 3
Thanks for taking time to respond,an I agree,I have known this error for a null root element element,but I wanted to make sure that there are not any other popular causes for this.Thanks again.
me_elf at 2007-6-29 11:45:24 > top of Java-index,Enterprise & Remote Computing,Enterprise Technologies...