Error when trying to remove hook

[ghost]

Hi, i was trying out this library and for hooking it works really well, but it crash when i try to unhook, i tried to use this funtion from interceptor.cc
void Interceptor::RemoveHook(int id);
but it crash at the following instruction:
entry->StopHook()
i called it like this:
whale::Interceptor::Instance()->RemoveHook(id)
where the id is the index of the hook in the list
to create the hook i used
void WInlineHookFunction(void *address, void *replace, void **backup)
i tried to put log messages inside
void ArmInlineHook::StopHook()
but they weren't executed.
I tried to look the crash address in the library using ida pro, and it crash on the function call without even reaching the function.
This is the function call pseudocode:
(int *)(*(int (**)(void))(**(_DWORD **)v5 + 20))();
This is the assembly:

LDR             R0, [R4]
LDR             R1, [R0]
LDR             R1, [R1,#0x14]
BLX             R1