You likely have some files that are outdated causing this issue - or a permission issue on your system making it unable to read the appropriate language files.
{ Missing Text } after update
I found the problem!
Line 25 in users/admin.php is
include $abs_us_root.$us_url_root."users/includes/dashboard_language.php"
But it should be
include $abs_us_root.$us_url_root."users/lang/en-US.php";
Line 25 in users/admin.php is
include $abs_us_root.$us_url_root."users/includes/dashboard_language.php"
But it should be
include $abs_us_root.$us_url_root."users/lang/en-US.php";
Thanks for the confirmation and finding this problem. We'll need to look into this further. I'm not positive this modification is correct, even though it works. Can you please open a bug ticket at userspice.com/bugs so we can take a further look, and also make a note with your resolution? Thank you.