we are getting a crash in iOS 10.3.2, app was built with Unity 5.5.2f1

Hi,
Our app is live with Unity 5.5.2f1, since the latest iOS 10.3.2 update we are seeing spike in crashes.

0x1905f0138 objc_autorelease + 8
0x101993924 MBx_DDExtractFileNameWithoutExtension + 899880
0x101957df4 MB_AFContentTypesFromHTTPHeader + 655352
0x1019367e0 MB_AFContentTypesFromHTTPHeader + 518628
0x1926664cc __NSThreadPerformPerform + 340
0x191b2142c CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION + 24
0x191b20d9c __CFRunLoopDoSources0 + 540
0x191b1e9a8 __CFRunLoopRun + 744
0x191a4eda4 CFRunLoopRunSpecific + 424
0x192568d74 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 304
0x1925bd6c4 -[NSRunLoop(NSRunLoop) run] + 88
0x101934104 MB_AFContentTypesFromHTTPHeader + 508680

hey which x code version you are using???