After several failed attempts since 3.x came out, I tried again. Fresh site, fresh database, newest download of software (3.3.0.4). Debian 7 with latest updates, PHP5.4.45.
I installed it, the install appears to have succeeded, and yet after login I'm faced again with a blank central screen. The annoying thing is that there's no easy way to debug it. No errors on screen, even after turning on 'DEBUG'.
There are no errors in the site error.log.
cache/log.php says:
#1 ERROR: Error: Undefined index: dimensions in '/var/www/clients/client4/web9/web/application/layouts/website.php' on line 523 (
error code:

#2 ERROR: Error: Invalid argument supplied for foreach() in '/var/www/clients/client4/web9/web/application/layouts/website.php' o
n line 523 (error code: 2)
Could it be true these coding errors are the problem?