Unable to view packages / system updates after installing ntopng

[pra]

Hello
After install the new ntopng package , i can t vew packages and system updates
ntopng works fine
during the install the script seems do a lot of chmod

my config is :
2.3.2-RELEASE (amd64)
built on Tue Jul 19 12:44:43 CDT 2016
FreeBSD 10.3-RELEASE-p5

uname -a
FreeBSD fw1.pra.rip 10.3-RELEASE-p5 FreeBSD 10.3-RELEASE-p5 #0 7307492(RELENG_2_3_2): Tue Jul 19 13:29:35 CDT 2016    root@ce23-amd64-builder:/builder/pfsense-232/tmp/obj/builder/pfsense-232/tmp/FreeBSD-src/sys/pfSense  amd64

Package already installed :
iftop
iperf
mtr-nox11
nmap
nrpe

update setting :
Branch : Stable (default)

harware : PC
CPU : Xeon E31220
RAM ECC  8G
DISK : mecanic 500G

Thank you for your help

PS :  i seen a post which speak the same issue :  https://js4.red/r/PFSENSE/comments/4v3jxp/unable_to_view_packages_system_updates_after
          tell me if you need other information / log