sshfs stopped working after motherboard change

[kalpana]

Dear all

I hope someone can solve this mystery for us.
Today our motherboard stopped working and we changed to a new different motherboard and booted the same Ubuntu 14.04 LTS system from the same SSD drive. Everything worked fine except from the fact that a remote pc that used to connect to this pc through the internet with the command below is not connecting any more. It gives read: Connection reset by peer

sshfs -C -o uid=$USERID,ssh_command='ssh -i ~/.ssh/colKey',workaround=rename noel@nlaUb:/home/nla/software/nladf /usr2

It is pinging OK so the physical connection is still there.

Thanks in advance for any input or ideas.