We apologize for the instability of composr.app and appreciate your patience. We are working on the statistics addon and trying to find an optimal way to store and render data. Unfortunately, we have yet to find a solution that can handle the traffic (and therefore, tens of millions of statistical records) of composr.app. We're working hard on one.
#6063 - Content translations broken; installer fails on either step 7 or 9 when enabled
The issue was how $HAS_MULTI_LANG_CONTENT was being set, especially in multi_lang_content().
This hotfix addresses the issue. While not widely tested yet, a full install of v11 with content translations on seems to be working.