IPMonitor Service Stopping

I have recently upgrade our IPMonitor servers to version 11.1 from 11.0.1 however since the upgrade we are seeing the IPMonitor service randomly stop. When checking event viewer on all the boxes they show the same application error:

Faulting application name: ipmservice.exe, version:, time stamp: 0x5f88258a
Faulting module name: ipmservice.exe, version:, time stamp: 0x5f88258a
Exception code: 0xc0000409
Fault offset: 0x003b5cff
Faulting process id: 0x14bc
Faulting application start time: 0x01d6ed2e8fe258e4
Faulting application path: C:\Program Files (x86)\SolarWinds\ipMonitor\ipmservice.exe
Faulting module path: C:\Program Files (x86)\SolarWinds\ipMonitor\ipmservice.exe
Report Id: 74ea5b5e-8576-4b97-9c60-69aa0fcc97c6
Faulting package full name:
Faulting package-relative application ID:

I cannot find any other IPM posts with this error. I have had to restore one of the boxes back to 11.0.1 and now it is stable again but the others still randomly stopping.

Has anyone seen or have anyidea why this may be happening?