thanks IOhannes, 

verbose mode helped us realise that the file wasn't being found. 

we found the culprit.  i had shared the file via facebook chat, and it had clipped the tilde off the file name. 

seems to be working now!

cheers
Matt

On Wed, Feb 10, 2016 at 7:57 PM, IOhannes m zmoelnig <zmoelnig@iem.at> wrote:
On 2016-02-10 10:24, i go bananas wrote:
> i just made my first proper external, and was so super chuffed that i got
> it working.
>
> i'm on osx, so using .pd_darwin extension.
>
> i put it in my extra folder, made a demo patch in pd, and it works fine.
>
> only problem is, when i shared the .pd_darwin with 2 friends, it didn't
> work for either of them. (i checked they had put it in the extra folder)
>
> does anyone have an idea what might be wrong?

how about:

tell them to Pd in verbose-mode ("-verbose"), and see whether the
external can be found (and if it can't be found, this will give you a
clue where Pd searches for the libraries).

if it can be found, try to find out whether the dylib loader throws an
error (e.g. on the stderr/stdout; so you might need to start Pd from the
cmdline).

do you use the same Pd version?
Pd's API is very stable, but every now and then a new function is added.
if you use such a new function in your code, then you cannot use the
external with a version of Pd that predates the introduction of said
function).

do you (dynamically) link against non-standard libraries?
are they present (and in a searched-for location) on your friends machine?

fgmasdr
IOhannes


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