Download older version of a file from SharePoint Document Library using CSOM and 404 error

Hi,

I am trying to download previous versions including Major and Minor versions of documents from SharePoint Online using CSOM. I get 404 error when I try to download the file. I found several posts on various discussion forums where people are getting same error but none of those have any solution/answer. Below is one of the threads and sample code I have tried that results in 404 error. If I use the link in browser directly, I am able to download the file. Also I am able to download the current version of file using CSOM without any problem, it is only the older versions that give me 404 in CSOM.

http://qandasys.info/how-to-download-the-historical-file-version-content-using-csom/

public int GetStreamFromFile(string docid, string lib, string fileurl, ClientContext clientContext, int iuserid, string Version, bool isCurrrent)
{
if(!isCurrent)
{
List LibraryName = clientContext.Web.Lists.GetByTitle(lib);
clientContext.Load(LibraryName);
clientContext.ExecuteQuery();
CamlQuery camlQuery = new CamlQuery();
camlQuery.ViewXml = "" + fileurl +"";
Microsoft.SharePoint.Client.ListItemCollection collListItem = LibraryName.GetItems(camlQuery);
clientContext.Load(collListItem, items => items.Include(item => item.Id, item => item["FileLeafRef"], item => item["LinkFilename"],
item => item["FileRef"], item => item["File_x0020_Size"], item => item["DocIcon"], item => item.File.Versions));
//clientContext.Load(collListItem);
clientContext.ExecuteQuery();

foreach (Microsoft.SharePoint.Client.ListItem oListItem in collListItem)
{
//string fileurl1 = (string)oListItem["FileRef"];
//string filename = (string)oListItem["LinkFilename"];

foreach (FileVersion version in oListItem.File.Versions)
{
if (Version == version.VersionLabel)
{
//Added excutequery to get object one more time as per blog
//http://social.technet.microsoft.com/Forums/de-DE/sharepointdevelopmentprevious/thread/88a05256-8694-4e40-863d-6c77512e079b
clientContext.ExecuteQuery();
FileInformation fileInformation = ClientOM.File.OpenBinaryDirect(clientContext,version.Url);
bytesarr = ReadFully(fileInformation.Stream);
}
}
}
}
}

Darwaish