Without registering `loadVM`, it seems to crash: ``` C:\Users\blue\Desktop\work\Nim\compiler\vm.nim(2226) evalStaticStmt C:\Users\blue\Desktop\work\Nim\compiler\vm.nim(2215) evalConstExprAux C:\Users\blue\Desktop\work\Nim\compiler\vm.nim(1224) rawExecute C:\Users\blue\Desktop\work\Nim\compiler\vmops.nim(383) :anonymous C:\Users\blue\Desktop\work\Nim\compiler\vmmarshal.nim(135) storeAny C:\Users\blue\Desktop\work\Nim\compiler\vmmarshal.nim(59) storeAny SIGSEGV: Illegal storage access. (Attempt to read from nil?) ```

Why is this required? We have dozens of callbacks already which work fine without this.