I have downloaded Pduino 0.5 and have copied the arduino and arduino help patch into the folder where I am saving my puredata files.
but some how things are not working
clicking the device message is yeilding a set of errors
what do I do
I am pasting the message in the console window below:
zexy/unpack float float
... couldn't create
mapping/tolist
... couldn't create
mapping/tolist
... couldn't create
comport $1 57600
... couldn't create
mapping/debytemask
... couldn't create
mapping/debytemask
... couldn't create
mapping/debytemask
... couldn't create
mapping/debytemask
... couldn't create
mapping/debytemask
... couldn't create
mapping/debytemask
... couldn't create
mapping/debytemask
... couldn't create
mapping/debytemask
... couldn't create
moocow/string2any 32 -1
... couldn't create
mapping/tolist
... couldn't create
mapping/tolist
... couldn't create
cyclone/prepend
... couldn't create
[arduino]: version_0.5

please suggest whr I am going wrong
I cannot list my port using the devices message

You're missing quite some objects. You're actually missing these three libraries: zexy, mapping, and cyclone, and you're also missing the comort external, on which the [arduino] abstraction is based.
Go to Help -> Find externals and type the names of the libraries (one by one) and also "comport" to install them to your system.
Then go to Preferences -> Path, and set the paths to the new libraries so that Pd knows where to look for them. Lastly, go to Preferences -> Startup and write "zexy" (without the quotes) so that the zexy library loads on launch (it's a very helpful library that you'll probably need for other stuff too).
This should get you going.

Note: You're using an old version of Pduino that's not maintained any more. I suggest to switch over to the one Roman Heafeli started supporting, which depends only on [comport] and no other externals. You can find it here https://github.com/reduzent/pduino

as I am trying to download comport through external libraries I am getting this error message :
No writeable directory found in:
- C:/Users/Sujoy Mukherjee.GRAPHICSPRINTMA/AppData/Roaming/Pd
- C:/Program Files (x86)/Common Files/Pd
- C:/Program Files (x86)/Pd/extra
Cannot download/install libraries!

is thr a way to solve this

Maybe a Windows user can answer this, I don't think I can help you with that, sorry.

@maddynakedymaddy If those directories exist (and they probably do) then it must be a permissions problem. You will have to use Goggle (windows unable to write to program folder) to know, and to find a way around the problem.
David.