Win 7, IE 8 based application - Allscripts EMR crashes - Faulting app: iexplore.exe, ver.: 8.0.7601.17514, mod name: ntdll.dll, ver: 6.1.7601.17725, except code: 0xc015000f

I have a client with a Win 7, IE 8 based application - Allscripts EMR which crashes randomly: Faulting application name: iexplore.exe, ver.: 8.0.7601.17514, faulting module name: ntdll.dll, ver: 6.1.7601.17725, except code: 0xc015000f, time stamp: 0x4ec49b8f, Exception code: 0xc015000f, Fault offset: 0x000847db, Faulting process id: 0x%9, Faulting application start time: 0x%10, Faulting application path: %11, Faulting module path: %12, Report Id: %13

Any ideas?

Thanks.