Greetings, Just a couple of words in regards to update system. How it works - that's easy to understand. When we release a new version, we get hash (checksum) of each core file. Let's say you have 3.2.7, when we release 3.3.0 patch it has all the hashes for each file in the system and if your file version does not match the hash we have (in human words - you modified the file somehow), the system does not overwrite the file by default. Instead we have a log in our uploads/ folder about each operation, upgrade performed. We've got a complaint about incorrect upgrade to 3.3.0 version. So what do we do to analyze and fix the issue? You might get a blank white page - ok, that simply means your debug mode is OFF. In order to see the errors, you need to enable debug mode in our system, that's includes/config.inc.php file. Lines 17-18: PHP: // debug mode: 0 - disabled, 1 - enabled define('INTELLI_DEBUG', 0); As stated in comment it should be set to 1. If we analyze the upgrade log file, uploads/upgrade-log-330_13-03-15-1829.txt in our case: What do we see here. All SQL queries are successful, except a couple of file operations, that's definitely the key of the problem: Obviously admin/templates/default/templates.tpl & js/debug/hl.css would not be the problem, one of them is used for admin panel templates page, css is only used for debug. So the issue is related to TWO files we have: ia.core.php & SmartyPlugins.class.php Simply create a copy of your current files, and then upload new files from 3.3.0 archive from our website. Voila! The issue is fixed - don't forget to apply some extra instructions, that always go with the upgrade announcement. Specifically, 3.3.0 version requires template changes. I don't know (and cannot even imagine) the reason, why core and smartyplugins files hashes don't match the previous version. Probably you modified them, probably that was our staff, who knows - I only advise to use FORCED mode if you're sure you never modified the files. In this case, the system skips hash checks. I also recommend to make backups (both hosting control panel side & subrion). In this case you will be able to recover your website easily if anything goes wrong. And finally, weekend is not the best time for upgrade. We highly recommend to make upgrades in the beginning of the week as you can always count on our help. As you all know we don't work on weekends (yeah, our cyborg batteries need recharging) and there is a high risk you don't get help in a timely manner. Cheers and have a great weekend!