...
Server requirement:
- PHP 5.3+
- max_execution_time 300
- memory_limit 128M
...

@Admin: Thank you for the hint.

After some testing I have found that memory_limit = 34M is the minimum required to ensure that the compiler works. max_execution_time was set to 30.

Based on this finding, I have set the variables as follows:

max_execution_time = 120

memory_limit = 64M

Information about the technical environment:

PHP 5.3.3-7+squeeze19 with Suhosin-Patch
Joomla! 3.3.3
T3 BS3 Blank Template 2.1.6
T3 Framework plugin 2.3.2


Best Regards
Michael

hi admin, i have same problem, when compile LESS to CSS

there is no custom.less, no custom.css, just only T3_BS3_BLANK and T3_BLANK templates

here is my server configuration:

PHP: 5.6.9
NGINX: 1.8.0
memory_limit: 256MB
max_execution_time: 120

Before this version, there no problem, why after update 2.4.9 and joomla 3.4.3 has lots of problems???

PS: After add the "?themer=1" it can open page, there is nothing error

Tweaking the memory limit and execution time worked for me. Go into your site host's CPanel and look for the control to edit the php.ini file.

max_execution_time 300
memory_limit 128M