impossible to start the network when I doing the step by step installation.

[laurentvinc]

Hello,
I tried to install the application step by step manually. I tryed it several time to be sure to do every step correctly but when I wanted to start the network I have got the following error:

macbook: composer network start -c adminCard -n vehicle-manufacture-network -V 0.2.5 -A admin -C ./credentials/admin-pub.pem -f delete_me.card
Starting business network vehicle-manufacture-network at version 0.2.5

Processing these Network Admins:
userName: admin

✖ Starting business network definition. This may take a minute...
Error: Error trying to start business network. Error: No valid responses from any peers.
Response from attempted peer comms was an error: Error: 2 UNKNOWN: chaincode error (status: 500, message: instantiation policy violation: signature set did not satisfy policy)
Command failed

As it seems recurent, one of you , can help me to fix it?

[climb1to100]

I am also dealing with the same issue.Please help us to resolve the issue