May be, this is the same problem as Extension_talk:Survey#Stuck_Loading_Survey..._After_1.24.0_Update_52886 from Jan. 14 2015:
Fresh install on existing 1.24.1 MediaWiki, installation and update.php seemed to work fine: No error messages, tables created and available. Setting up new surveys seems to work fine, however when trying to take a survey it doesn't show up: "Take a survey" displays edit-options and one line: "Loading survey..." The survey itself doesn't show up.
tested branches:
- REL1_23 d6ce533
- REL1_24 c12985a
- master 8dcdeac
MediaWiki installation:
- MediaWiki 1.24.1
- PHP 5.5.10 (cgi-fcgi)
- MySQL 5.5.40
Any ideas where to dig in?