Hello all,

I'm working my way through the process for uploading firmata onto my arduino uno, using the Floss guide
(http://write.flossmanuals.net/pure-data/starting-pduino/)

I just downloaded the latest version of the arduino program from the arduino website, and then went through the process of deleting the old 'firmata' folder, and replacing it with the new one downloaded from: https://at.or.at/hans/pd/objects.html (running mac os 10.9,5).

However when I try and open the the arduino application, it comes up with an error that reads '"Arduino" is damaged and can't be opened. You should move it to the trash'."

I assume it has to be that specific Firmata in order to work with the Pduino objects? And is there any other way to upload it ? Or am I missing something obvious here?

I did think about rather than deleting the older firmata folder completely, just deleting the individual files and replacing them with those from the downloaded folder, but not sure if that's a good idea or not....

I'm pretty sure that Hans' Firmata is not the latest version as he stopped maintaining Pd-extended and all software around it (pduino, hci, etc.) years ago. Firmata is a standard Arduino library that comes with the IDE, so you don't need to change any files there.
As far as I know pduino is now maintaied by Roman Haefeli and you can get it here. Give that a shot and come back if you're still facing issues.