New Post: GetVersions Method

Hi ,

I am using GetVersions method in sharepoint 2010 to get the current page version history.
var url =window.location;

$().SPServices({

operation: "GetVersions",
fileName: url,
completefunc: function (xData, Status) {
    // Do other stuff...
    alert(Status); 

For some pages Status alert is showing success and for some pages alert message is showing as error.

error message "Value Cannot be null"

Let me know if I am missing something.

Thanks in Advance,
Satish