A NTLM-Hash that cannot be carcked using the corresponding LM Hash and Toggle

Hi there,

I use https://github.com/DidierStevens/DidierS...-ntlm.rule
to use cracked LM hashes to crack the corresponding NTLM hash. This works fine for most hashes I tested, but for one hash it fails to do so. There seems to be nothing special about the password, its letters, numbers and the symbol dot (.).
What may be the reason? false-preimage seems very unlikely given 69^7 preimages for a 2^64 hash

Thanks