OK, everything is OK now I have log like this: 2018-10-04 12:51:53.290 Status: User: Admin initiated a switch command (6/t3/Off) 2018-10-04 12:51:53.336 Status: dzVents: Info: Handling events for: "t3", value: "Off" 2018-10-04 12:51:53.336 Status: dzVents: Info: ------ Start internal script: test ...

Yes, in this file is the same as is in domoticz web log 2018-10-03 21:49:47.643 (Akwarium_test) Light/Switch (t3) 2018-10-03 21:49:47.790 (Akwarium_test) Light/Switch (t2) 2018-10-03 21:49:48.671 Notification sent (pushbullet) => Success 2018-10-03 21:50:34.311 Active notification Subsystems ...

This is start script on QNAP NAS #!/bin/sh CONF=/etc/config/qpkg.conf QPKG_NAME="domoticz" QPKG_ROOT=`/sbin/getcfg $QPKG_NAME Install_Path -f ${CONF}` APACHE_ROOT=`/sbin/getcfg SHARE_DEF defWeb -d Qweb -f /etc/config/def_share.info` export QNAP_QPKG=$QPKG_NAME export QPKG_ROOT export QPKG_NAME ...

I hope maybe tomorrow I'll get some information about start script on QNAP, now I haven't any idea.

I changed code and I have the same effect, I tried change language settings to English and effect is still the same. 2018-10-03 21:49:48.671 Notification sent (pushbullet) => Success 2018-10-03 21:50:34.311 Active notification Subsystems: pushbullet (1/13) 2018-10-03 21:51:14.711 (Akwarium_test ...

return { active = true, on = { devices = { 't3' }, logging = { level = domoticz.LOG_INFO, marker = "I am alive....." }, }, execute = function(domoticz, switch) if (switch.state == 'On') then domoticz.log('Hey! I am on!') domoticz.devices('t2').switchOn() domoticz.notify('Hey!', 'I am on!') else ...

I tried this script and can't see anything in logs.
I noticed that I can change state of switch so scripts DzVents work but I cannot see anything in logs (also from your example).

I understand and I have this settings on for all events type (Lua/Blockly/Scripts) and dzVents. For testing I set debug log level.
I also I tried to refreshed this setting by switch off and save and switch on and save.

Yes, I have in a script line:
active = true,
and enable it and saved.
Exacly the same way as with lua and blocly script (those work properly)

I have domoticz installed on QNAP NAS everything work properly besides DzVents scripts, I could trigger events blocly and lua but DzVents doesn't work and doesn't log anything (also in debug mode).