Some bugs with PoEdit

Hi, with every update I like to update my .po file on my language, and I always received this message from PoEdit. I know that is not something important and everything works properly, but just in case you want to fix it

04/23/14 18:52:32: ./config-templatebuilder/avia-shortcodes/contact.php:150: warning: Empty msgid.  It is reserved by GNU gettext:
04/23/14 18:52:32:                                                                    gettext("") returns the header entry with
04/23/14 18:52:32:                                                                    meta information, not the empty string.
04/23/14 18:52:32: ./config-templatebuilder/avia-shortcodes/heading.php:114: warning: Empty msgid.  It is reserved by GNU gettext:
04/23/14 18:52:32:                                                                    gettext("") returns the header entry with
04/23/14 18:52:32:                                                                    meta information, not the empty string.
04/23/14 18:52:32: ./config-templatebuilder/avia-shortcodes/icon.php:130: warning: Empty msgid.  It is reserved by GNU gettext:
04/23/14 18:52:32:                                                                 gettext("") returns the header entry with
04/23/14 18:52:32:                                                                 meta information, not the empty string.
04/23/14 18:52:32: ./config-templatebuilder/avia-shortcodes/magazine.php:95: warning: Empty msgid.  It is reserved by GNU gettext:
04/23/14 18:52:32:                                                                    gettext("") returns the header entry with
04/23/14 18:52:32:                                                                    meta information, not the empty string.