OK, Another update, After a clean installation of Mediacenter 14, it appears to be the import that is causing the issue. If I stop the import the system doesn't APPEAR to lockup. If I perform an import of just one directory of MP3, Mediacenter will shut down with an application error. Each time I would perform an import the application would halt. This appears to a J River issue. I ran 13 with no problems on Vista (same laptop) but not on Windows 7. And before I get asked this is not an upgraded install it is a fresh installation of Windows 7 Professional.
Currently running the most UpToDate version available from J River 14.0.96
Windows 7 with all the update that are available.
Faulting application name: svchost.exe_WinDefend, version: 6.1.7600.16385, time stamp: 0x4a5bc3c1
Faulting module name: unknown, version: 0.0.0.0, time stamp: 0x00000000
Exception code: 0xc0000005
Fault offset: 0x0000000006bc8094
Faulting process id: 0x150
Faulting application start time: 0x01ca6ef2bc33e110
Faulting application path: C:\Windows\System32\svchost.exe
Faulting module path: unknown
Report Id: f2639830-dae9-11de-9b58-001b24de86ca
Faulting application name: Media Center 14.exe, version: 14.0.96.0, time stamp: 0x4af8a087
Faulting module name: Media Center 14.exe, version: 14.0.96.0, time stamp: 0x4af8a087
Exception code: 0xc0000005
Fault offset: 0x00072507
Faulting process id: 0xedc
Faulting application start time: 0x01ca6ef592cac6b0
Faulting application path: C:\Program Files (x86)\J River\Media Center 14\Media Center 14.exe
Faulting module path: C:\Program Files (x86)\J River\Media Center 14\Media Center 14.exe
Report Id: efe0e4f0-dae9-11de-9b58-001b24de86ca
Faulting application name: Media Center 14.exe, version: 14.0.96.0, time stamp: 0x4af8a087
Faulting module name: ntdll.dll, version: 6.1.7600.16385, time stamp: 0x4a5bdb3b
Exception code: 0xc0000005
Fault offset: 0x00033913
Faulting process id: 0x10d8
Faulting application start time: 0x01ca6ef6b8ed5c30
Faulting application path: C:\Program Files (x86)\J River\Media Center 14\Media Center 14.exe
Faulting module path: C:\Windows\SysWOW64\ntdll.dll
Report Id: 0b3990d0-daea-11de-9b58-001b24de86ca