> The underlying issue here is that Python is attempting a "print" statement,
> but sys.stdout is invalid.  This is actually quite common for GUI programs,
> but I'm not sure why we have never seen it in the past.
>
> There are only a few "print" statements left in pyxpcom (and the one you hit
> is still there in the latest versions).  Many have changed to logging calls,
> so I guess the remaining ones should simply handle this IOError attemting to
> print.
>
> Thus, you may like to change server/module.py from:
>
>             print "Registering '%s' (%s)" % (reg_contractid, fname)
> to
>             try:
>                 print "Registering '%s' (%s)" % (reg_contractid, fname)
>             except IOError:
>                 pass
>
> There are a few prints in that source file that should be changed similarly.
> server/policy.py should be changed in the same way.

I have changed server/module.py and server/policy.py as you told me and it
seems to work.

No error is printed by the javaScript console and I can successfully
use my small component.

Thanks for your help.

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