I'm using the RadGridView.ExportToXlsx() to export my grid to an Excel (.xlsx) file. The exported File works perfectly in Excel 2016, but in OpenOffice (Apache_OpenOffice_4.1.2_Win_x86_install_de) I get the error "Wrong Format".
The only workaround is to open the exported file in Excel and save it. After that the file can be opened in OpenOffice.
I can reproduce the error with the WPF Controls Examples Q1 2016 SP1 (Exporting to Xlsx and Pdf fromats).
Is there any way to solve this?