File is Empty - reports were just working
I have several hundred simultaneous users running a system that uses Crystal reports. The system has been running for a number of months and we've recently been issuing a server reboot at 3AM because it appeared to correct some issues. This is a wintel VM environment. It's an ASP.NET application developed in Visual Studio 2010 and uses the Crystal 13 engine.
Last night the reports suddenly stopped working and instead were displaying the File is Empty message.
I'm at a loss as to where I should start looking to see if there's something that can be fixed. My management wants me to convert all the reports to the Microsoft Report Writer as they see that as a reduced risk.