On 10/25/2019, Open results in "[error] No ipc available for the playing commands tab"

After reading I probably did not understand how to use the Open command. I hope someone can explain to me so I can understand how to use the Open command so that my script will run instead of stopping on error of “No ipc available…”

Also, what is an “IPC?”

Steps to Problem:

  1. Open Firefox
  2. Open UI Vision
  3. Run macro Open Google. See error.
  4. Rerun macro. Macro runs without error.

Script Source:
“Name”: “Open Google”,
“CreationDate”: “2019-10-25”,
“Commands”: [
“Command”: “open”,
“Target”: “https://www.google.com”,
“Value”: “”


[status]    Playing macro Open Google
[info]    Executing:  | open | https://www.google.com |  | 
[error]    No ipc available for the playing commands tab
[info]    Macro failed (Runtime 0.34s)

Information from Firefox >> Help >> Troubleshooting Information

Browser Firefox
Version 70.0
Build ID 20191016161957
Update Folder
Update History
Update Channel release
User Agent Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:70.0) Gecko/20100101 Firefox/70.0
OS Windows_NT 10.0
Application Binary C:\Program Files\Mozilla Firefox\firefox.exe
Profile Folder
Enabled Plugins about:plugins
Build Configuration about:buildconfig
Memory Use about:memory
Performance about:performance
Registered Service Workers about:serviceworkers
Launcher Process Enabled
Multiprocess Windows 2/2 Enabled by default
Remote Processes 5
Enterprise Policies Inactive
Google Location Service Key Found
Google Safebrowsing Key Found
Mozilla Location Service Key Found
Safe Mode false
Profiles about:profiles

I think I may have found the answer. Instead of Open command, I need to use execute_Script_Sandbox, as follows:

“Name”: “Open Google”,
“CreationDate”: “2019-10-25”,
“Commands”: [
“Command”: “executeScript_Sandbox”,
“Target”: “return window.open(“https://www.google.com”)”,
“Value”: “win_main”
“Command”: “waitForPageToLoad”,
“Target”: “”,
“Value”: “”

Still, would be nice to know what an IPC is, and in what situation you would use the Open command.

Actually, using executeScript_Sandbox, I am getting this error:

[error] Error #101: Kantu is not connected to a browser tab
[info] Macro failed (Runtime 0.17s)

So, I don’t know what is up or down with this.

This is an old bug of Kantu, click on info for this command in kantu windows, it open a new tab and restart macro, usually with this trick kantu work again

See image

bringBrowserToForeground is a great answer for me.

I tried a few browser automation Add-ons. I switched between them trying to make them work. UI.Vision’s Kantu was the one I was able to get working first and the most. So I am relieved that looks like I can make Kantu work completely.