To reproduce: - add RadGridView with several columns and rows and export the grid to pdf file. - open the exported PDF file with Foxit Reader version 2.2. The opened file is blank.
In Q2 2015 (version 2015.2.623) we introduced the GridViewPdfExporter which is based on RadPdfProcessing. The exported files with the ExportToPDF can not be opened with Foxit Reader version 2.2 so you can use the new export. The exported pdf files with ExportToPDF and GridViewPdfExporter are successfully opened with newer version of Foxit Reader (version 4.0 and 7.1.5.425).