Nopcommerce

We are having an issue with our current live ecommerce store running on .NET 4.0 and Windows server 2008 R2 Below are the details Application pool is crashing intermittently. I checked system events & found following error:- Faulting application name: [login to view URL], version: 7.5.7601.17514, time stamp: 0x4ce7a5f8 Faulting module name: [login to view URL], version: 4.0.30319.261, time stamp: 0x4ec9f6ff Exception code: 0xc00000fd Fault offset: 0x000018a8 Faulting process id: 0x50d0 Faulting application start time: 0x01ce526cfd57c69a Faulting application path: C:\Windows\SysWOW64\inetsrv\[login to view URL] Faulting module path: C:\Windows\Microsoft.NET\Framework\v4.0.30319\[login to view URL] Report Id: 3f39c1e2-be60-11e2-95b7-001dd8c1215f I google this & found that this could be stack overflow exception. But same code is working fine on my local IIS. So i moved ahead with generating IIS dump with DebugDiag tool. Here is the error which i got in dump:- the assembly instruction at [login to view URL] from Microsoft Corporation has caused a stack overflow exception (0xC00000FD)