Runtime crashing after several scene changes

Hi

Hopefully someone can help - pulling my hair out and unsure where to turn next.

I have a fairly simple project - 3 scenes (Main menu, editor and game).

After switched from "main menu" to "game" scene several times (around 10 in total) and back again, i eventually get a crash as below.

It's now always in the same piece of code and just seems to be when Unistorm is waking up and finding it's feet. I had made some changes which i thought would be responsible so i backed them out - these were causing a similar error earlier in gameplay but with a different module (these were with Battlehub not Unistorm if anyone is familiar with them).

I've not been able to reproduce in the editor so far. Is there something I should be mindful of when changing scene that I am overlooking - at the moment I simply call "LoadScene" but i am getting the impression that something isn't properly closing down when I do?

0x00007FFA2A70C290 (UnityPlayer) UnityMain
0x00007FFA2AF7045A (UnityPlayer) UnityMain
0x00007FFA2B03C9DC (UnityPlayer) UnityMain
0x000001A261A6FE8A (Mono JIT Code) (wrapper managed-to-native) UnityEngine.Object:FindObjectsOfType (System.Type,bool)
0x000001A262C2FE73 (Mono JIT Code) UnityEngine.Object:FindObjectOfType (System.Type,bool)
0x000001A262C2FCA3 (Mono JIT Code) UnityEngine.Object:FindObjectOfType<T_REF> ()
0x000001A26AC88B6B (Mono JIT Code) [E:\terrainmapper\000.65 Stable - Copy\multiplayertest2\Assets\imports\UniStorm Weather System\Scripts\System\WeatherType.cs:129] UniStorm.WeatherType:CreateWeatherEffect ()
0x000001A26AC82AA3 (Mono JIT Code) [E:\terrainmapper\000.65 Stable - Copy\multiplayertest2\Assets\imports\UniStorm Weather System\Scripts\System\UniStormSystem.cs:585] UniStorm.UniStormSystem:InitializeUniStorm ()
0x000001A26AC805D3 (Mono JIT Code) [E:\terrainmapper\000.65 Stable - Copy\multiplayertest2\Assets\imports\UniStorm Weather System\Scripts\System\UniStormSystem.cs:443] UniStorm.UniStormSystem:Start ()
0x000001A25F48EFE8 (Mono JIT Code) (wrapper runtime-invoke) object:runtime_invoke_void__this__ (object,intptr,intptr,intptr)
0x00007FFA71E5DB10 (mono-2.0-bdwgc) mono_get_runtime_build_info
0x00007FFA71DE2902 (mono-2.0-bdwgc) mono_perfcounters_init
0x00007FFA71DEB95F (mono-2.0-bdwgc) mono_runtime_invoke
0x00007FFA2AF7487D (UnityPlayer) UnityMain
0x00007FFA2AF714BC (UnityPlayer) UnityMain
0x00007FFA2AF5791D (UnityPlayer) UnityMain
0x00007FFA2AF579AE (UnityPlayer) UnityMain
0x00007FFA2AF550C1 (UnityPlayer) UnityMain
0x00007FFA2A8FFB9C (UnityPlayer) UnityMain
0x00007FFA2ABA5324 (UnityPlayer) UnityMain
0x00007FFA2AB948BC (UnityPlayer) UnityMain
0x00007FFA2AB94987 (UnityPlayer) UnityMain
0x00007FFA2AB99224 (UnityPlayer) UnityMain
ERROR: SymGetSymFromAddr64, GetLastError: 'Attempt to access invalid address.' (Address: 00007FFA2A64A87B)
0x00007FFA2A64A87B (UnityPlayer) (function-name not available)
ERROR: SymGetSymFromAddr64, GetLastError: 'Attempt to access invalid address.' (Address: 00007FFA2A64948A)
0x00007FFA2A64948A (UnityPlayer) (function-name not available)
ERROR: SymGetSymFromAddr64, GetLastError: 'Attempt to access invalid address.' (Address: 00007FFA2A64DB7D)
0x00007FFA2A64DB7D (UnityPlayer) (function-name not available)
0x00007FFA2A64ECCB (UnityPlayer) UnityMain
ERROR: SymGetSymFromAddr64, GetLastError: 'Attempt to access invalid address.' (Address: 00007FF73F1A11F2)
0x00007FF73F1A11F2 (VTT Master) (function-name not available)
0x00007FFABF8B7034 (KERNEL32) BaseThreadInitThunk
0x00007FFABFEFD0D1 (ntdll) RtlUserThreadStart

 

I am getting the exact same error, from exactly the same conditions (when changing the scene) and I also have no idea why. Any progress on this?