I have set up a site using Xmarket theme on WordPress 4.1.5 and everything was fine, I've transferred the site to a live host and now the language files seem to of been corrupted. From what I gather they are stored in the wp-content/themes/xmarket/languages/en_GB.po as I found the msgstr in question being displayed as 'logaaaut' for logout and 'SAIGNNNN' for Sign In.
****example of the file****
#: et-links.php:13 et-links.php:14
msgid "Sign In"
msgstr "SAIGNNNNN"
I have edited these msgstr to show the correct values of Sign In and the same for Logout but it doesn't seem to of had an effect to the site.
****edited version****
#: et-links.php:13 et-links.php:14
msgid "Sign In"
msgstr "Sign In"
I have also tried to delete the language files and re-upload the non corrupt versions from the other working site but to no avail.
Bit stuck on what to try next.
I have realised how this error has occurred, when I transferred the site to the new host I actually ended up changing the language from English (United States) to English (UK). Once changed back on WordPress Dashboard>Settings>General>Site Language it has rectified the mistake in translation.