User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; fr-FR; rv:1.8.1.4) Gecko/20070515 Firefox/2.0 MEGAUPLOAD 1.0 Build Identifier: A non English version of Thunderbird is impossible to install unless you are keen on reading garbage. Reproducible: Always Steps to Reproduce: Problem nr. 1: 1. Download a Thunderbird installer in any foreign language (Japanese, Russian, Lithuanian, Korean, Greek etc.). 2. Make sure your system locale is different from the one used for the language you just downloaded the file. 3. Run the installer. Problem nr. 2: When the installer asks where you want to install, type some exotic in, like "C:/Program Files/タンダбирд" Problem nr. 3 Create a user in Windows and name it as follows: ゲストгест. Actual Results: 1. Depending on the language you chose, the text is presented as garbage. This is what you get if you run the Japanese installer: Mozilla Thunderbird ‚̃ZƒbƒgƒAƒbƒv ‚±‚̃EƒBƒUƒh‚Å‚ÍMozilla Thunderbird‚̃Cƒ“ƒXƒg[ƒŒ... 2. Thunderbird installs in "C:/Program Files/". 3. Thunderbird doesn't run. Expected Results: 1. The text should appear correctly despite my system locale settings: Mozilla Thunderbird のセットアップ このウィザドではMozilla Thunderbirdのインストーレ... Unicode is a perfect solution for this kind of problems. 2. Thunderbird should install in "C:/Program Files/タンダбирд" 3. Thunderbird should run.

The plan is to solve this by switching to an MSI installer once there are resources available to do so.