Q:

Devexpress wpf wrong exporting to Xls

I'm using DevExpress Wpf GridControl v2011.2.
I try to export data to excel via standard devexpress' mtethods:
 XlsExportOptions options = new DevExpress.XtraPrinting.XlsExportOptions()
            {
                TextExportMode = DevExpress.XtraPrinting.TextExportMode.Text,
                ExportMode = XlsExportMode.SingleFile,               
                Suppress65536RowsWarning=true,
                ShowGridLines=true,
                SheetName=header

            };
 ((TableView)GridControlForExporting.View).ExportToXls(filename, options);

The end-user has Windows XP and Office 2007. this combination has problems. After exporting the data over 750 rows, the file has 750,751,752 merged rows (A750 merged with A751,A752; B750 with B751,B752 and so on). On windows 7 and office 2010 there is no such problems.
What can cause it?
Solved
The issue was solved with installing 2011.2.10 binaries.
There were some moments:

enviroment was  as virtual machines
devexpress components were trial

A:

Merging, at least of columns is behavior by design because Devexpress is trying to export in a WYSIWYG manner to excel. 
See here for more
If it works on another machine, it could be because they layout of the grid is different there.

