With regard to this previous thread: http://www.telerik.com/forums/rad-grid-import-from-excel
First, I've examined the code and I'm a bit confused. I thought this technique only worked for XLS format, not the new XLSX.
Second, I have had an app up and running for some time now using that technique to import xls files without any problem.
Now, suddenly I cannot perform this operation locally in Visual Studio.2012 (It was working fine during the original development) It crashes: The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine.
As far I know this is part of the package Microsoft Access Database Engine 2010. I have version 14 installed.