16 August 2017: control panel has been updated to version 5.3.1.

Beginning with version 5.3, SM plugins do not support older browsers and do not work with JavaScript disabled. To work with older browsers the compatibility mode is preserved.

Bugs fixed in the modules: news adding, file downloading. In the file downloading module ensure a triple check of the actual contents of the downloaded file via its extension, as well as the presence of text metadata in the image.