We have a dual board Machine. One of the board gets connected to the network using a LAN wire and the other board gets 
connected to the first board using serial communication(COM port). 

We have an existing code in QNX 6.2 which is 

io-net -dspeedo -dfd fd=/dev/ser1,mac=000102030405,ahdlc -ptcpip
ifconfig en1 / netmask 255.255.255.252

Now we are porting it to QNX 6.5.0
I am trying to create a serial communication like above in QNX 6.5.
I wrote the code 
io-pkt-v4-hc -d/lib/dll/devnp-speedo.so -d/lib/dll/devnp-shim.so /lib/dll/devn-fd.so fd=/dev/ser1,mac=000102030405,adhlc
 -ptcpip

But the above command throws and error. IT says unable to init the devnp-shim driver. I am new to QNX and i am stuck 
with this serial communication problem for the last 3 weeks. I tried almost everything that is available on the internet
 but nothing seems to work. We have a release deadline on next tuesday for this. I have ported everything except this 
serial communication between these 2 boards is not working. Please help me in solving this.