Plugin version 1.0.1
Files: include/base.php
line 76, include/languages-form.php
line 170, maybe more
Bug: </option>\n'
should be </option>'."\n"
Otherwise the html output has plain text \n instead of a LF:
<option value="en" selected="selected">English</option>\n <option value="de">Deutsch</option>\n</select>