Reviewer Subject Assignments bug in research portal

Reviewer Subject Assignments work fine in original website, but failed in mirror site.
Reviewer assignment not saved in project NASA QCPR 2.
http://dev.cesei.org:8080/research/projects/manage_review_assignments.php
modify C:\php\php.ini in dev.cesei.org
line 384 change
max_execution_time = 30
to
max_execution_time = 300
line 405 change
memory_limit = 128M
to
memory_limit = 256M

line 801 change
upload_max_filesize = 2M
to
upload_max_filesize = 100M

line 805 add
upload_tmp_dir ="C:\LMS\file_uploads"


apache, cannot delete error.log
C:\Program Files\Apache Software Foundation\Apache2.4\logs
around 30G
stop Apache server first, dete error.log, then restart server

Still not fix the problem, check
C:\Program Files\Apache Software Foundation\Apache2.4\logs\error.log
error message:
Tue Dec 10 13:39:20.820054 2013] [:error] [pid 248:tid 1116] [client 142.103.72.45:59138] PHP Warning:  Unknown: Input variables exceeded 1000. To increase the limit change max_input_vars in php.ini. in Unknown on line 0, referer: http://dev.cesei.org:8080/research/projects/manage_review_assignments.php

php.ini, line 401 change
 ; max_input_vars = 1000
to
 max_input_vars = 100000