Here is the output from a new server that i created from scratch:
[root@ocs-test binutils]# ./ocsinventory-injector.pl -f esx55.test.com-2015-08-03-00-27-27.ocs -u
http://ocs-test.jacobs.com/ocsinventory -v
Loading esx55.test.com-2015-08-03-00-27-27.ocs...ERROR: 500 Internal Server Error
[root@ocs-test binutils]# tail -f /var/log/ocsinventory-server/activity.log
Sat Jun 11 11:27:12 2016;23650;114;esx55.test.com-2015-08-03-00-27-27;10.64.0.154;OCS-NG_INJECTOR_PL_v3;inventory;no_session
Sat Jun 11 11:29:45 2016;23675;114;esx55.test.com-2015-08-03-00-27-27;10.64.0.154;OCS-NG_INJECTOR_PL_v3;inventory;no_session
tail -f /var/log/httpd/access_log
10.64.0.154 - - [11/Jun/2016:11:29:45 -0700] "POST /ocsinventory HTTP/1.1" 500 527 "-" "OCS-NG_INJECTOR_PL_v3"
Thank you!