Help RESOLVE Error! LoadExternalBlockFile: Deserialize or I/O error Bitcoin Code Error

Need an EXPERT DEV to help resolve issue. Trying to do is trying to add merged mining (AuxPow) to a code base used by bitcoin/litecoin. However, we are running into the following error: >> LoadExternalBlockFile: Deserialize or I/O error - Read attempted past buffer limit: iostream error This error comes from: >> streams.h, near line 626 in the "read" method of CBufferedFile. When trying to read a block with AuxPow, the relevant local variables in "read" are: >> nsize 32, nReadPos 755, nReadLimit 776 The code base where most of the changes happen related to this happen in block.h: Code: // Copyright (c) 2009-2010 Satoshi Nakamoto // Copyright (c) 2009-2016 The Bitcoin Core developers // Distributed under the MIT software license, see the accompanying // file COPYING or [login to view URL] #ifndef BITCOIN_PRIMITIVES_BLOCK_H #define BITCOIN_PRIMITIVES_BLOCK_H #include "primitives/transaction.h" #include "serialize.h" #include "uint256.h" /** Nodes collect new transactions into a block, hash them into a hash tree, * and scan through nonce values to make the block's hash satisfy proof-of-work * requirements. When they solve the proof-of-work, they broadcast the block * to everyone and the block is added to the block chain. The first transaction * in the block is a special one that creates a new coin owned by the creator * of the block. */ class CAuxMerkleBranch : public CMutableTransaction { public: uint256 hashBlock; std::vector<uint256> vMerkleBranch; int nIndex; // memory only mutable bool fMerkleVerified; CAuxMerkleBranch() { Init();