local language is not detected at first start

What version?
What operating system?
What errors are shown?

^_^

What operating system? Unix (linux), off course, what other else?
(cloc3 gentoo ebuild, from wiidea overlay )

What version? Last stable: 0.41.1

step to reproduce:
1. $ rm -rf ~/.whiteboard
2. $ whyteboard

first alert: "Error setting language to - reverting to English"
second alert: "Cannot set locale to 'en_GB'"

the second alert does not appear after .whyteboard is created.
the first alert appears up to the locale language is choosed with preferences dialog window.

okay, what's your system language set to? Mine's British

cloc3@s939 ~ $ cat /etc/locales.conf
[default]
 date format = %b %d %Y %I:%M%p

[en_US]
 date format = %b %d %Y %I:%M%p
 language = us_english
 char set = iso_1

[es_ES]
 date format = %b %d %Y %I:%M%p
 language = spanish
 char set = iso_1

[pt_BR]
 date format = %d/%m/%Y %H:%M
 language = Portuguese
 char set = iso_1

[it_IT]
 date format = %d/%m/%Y %H:%M
 language = Italiano
 char set = iso_1

cloc3@s939 ~ $ echo $LC_ALL
it_IT.UTF-8