Anyone was able to successfully fork BlackCoin ?

Hello,

I am wondering if anyone was able to fork BlackCoin and get it to work ?

Here is my repo
https://github.com/blackcoinhelp/blackcoin

My goal is to keep everything as BlackCoin for now, the name, ticker, etc but to make it a new coin just for learning purpose.

Here is what I did:
Removed all seednodes/nodes from blackcoin and used 2 local machine for nodes to test the mining.
I removed the checkpoints and added the gen hash there.

I changed the pubkey a little to make it different.

I changed the pchMessageStart

I used this to mine: https://bitcointalk.org/index.php?topic=260049.0

Now my problem:
When I start to mine, it just doesn't work.
generated 500.00
ERROR: AcceptBlock() : reject too new nVersion = 7
ERROR: ProcessBlock() : AcceptBlock FAILED
ERROR: CheckWork() : ProcessBlock, block not accepted
CheckWork() : new proof-of-work block found

Anyone can help ? Did I forget to change something ?