Due to one significant bug regarding resource uploading, we've released another version in the never ending 1.2.x release cycle. If, for some reason, you can't fully upgrade to this release, at least grab the following two files:
class/data/validator/uploadvalidator.class.php
class/template/templatesandbox.class.php
as that will fix the major issue. The rest of the issues aren't as important.
See the release notes for more details.
