Aquarium 3.2.1 Update has been released just recently.

You can download it using ChessOK Downloader or from our site:
Full update from any version
Incremental update 3.2.0 to 3.2.1

The download size is 18 Mb.

Read below what’s new in Aquarium 3.2.1 (also available in the Aquarium FAQ):

Features

* Seriously reworked Setup position dialog
* You can change the opponent engine’s opening book during the game in Play mode
* You can have separate opening book setting for Play mode

Bugfixes

* Fixed occasional crash when starting infinite analysis
* Fixed the crash when infinite analysis is started upon closing IDEA
* Fixed the focus change from tree to notation that occurs when the mode is changed
* Fixed move number when setting up position – it’s no longer 1 in all cases
* Fixed move number ignoring when the position on board doesn’t change
* Fixed possible change of starting move number whenn pasting a game from clipboard or otherwise joining two notations. This also means that TB6 online respects the move numbers now.
* Fixed the fact database root was ignored for engine_games database
* Fixed the occasional situation when moves made from tree window were not reflected on the board
* Increased the total move limit from 500 to 1000 moves
* Fixed occasional JavaScript error (missing