ArcGISIOS v10.1.1 crash on iPad8.1.1(deployment target ios6.1, server side his v10.24)

my client reported issue of GIS crash when he updated iPad to latest version(IOS8.1.1) his server side GISversion is 10.24. this was working fine on IOS8.0.1.

Versions: IOS Base SDK - 8.1.1 iPad ver - 8.1.1 deployment target - iOS6.1 Server side GIS ver - 10.24

GIS was working fine on iPad ver8.0.1, server side GIS - 10.24, deployment target ios6.1. GIS working fine with latest iPad version, deployment target 8.1.1. but the movement i change deployment target ios6.1 crash with below message:

"libc++abi.dylib: terminating with uncaught exception of type Esri_runtimecore::Geometry::Geometry_exception: std::exception"

i tested above setting with server side GIS ver. 10.04 works fines with deployment target ios6.1 on iPad ver 8.1.1.

so crash is only when deployment target is ios6.1, iPad ver: 8.1.1 and server side GIS ver. 10.24.

not possible to catch exact place of above exception i even added exception break point, tried all possible things.

let me know what i can do.