Error - until: ipc of tab to play expired!

UI.Vision RPA
1

I have a macro I’m running just fine on my computer, but I sent it to someone else and they keep getting the following error. [Error] until: ipc of tab to play expired

Most of the time the error message is helpful but I don’t know what this means? Any help is appreciated. Thanks!

2

The error means that Kantu lost the connection to the tab somehow… but I am not sure why. So a question first: If this happens, does it happen with all macros or does “only” this macro no longer work? If so, can you copy the macro code here?

3

It doesn’t happen with all macros, although I have had it happen before. Typically if I restart Kantu and run a different macro and come back to it it’ll work again but this one that trick didn’t work. Below is the code. It errors out on the first command.

{
“CreationDate”: “2018-6-1”,
“Commands”: [
{
“Command”: “csvRead”,
“Target”: “YT flag.csv”,
“Value”: “”
},
{
“Command”: “while”,
“Target”: “”${!csvReadStatus}" ==“OK”",
“Value”: “”
},
{
“Command”: “selectWindow”,
“Target”: “tab=open”,
“Value”: “${!COL1}”
},
{
“Command”: “click”,
“Target”: “css=#action-panel-overflow-button > span”,
“Value”: “”
},
{
“Command”: “click”,
“Target”: “css=#action-panel-overflow-menu > li:nth-child(1) > button > span”,
“Value”: “”
},
{
“Command”: “type”,
“Target”: “id=Z”,
“Value”: “Z”
},
{
“Command”: “click”,
“Target”: “id=Z”,
“Value”: “”
},
{
“Command”: “click”,
“Target”: “css=#action-panel-report > div > div.options-renderer-form > ul > li.options-renderer-category.clearfix.options-renderer-category-selected > p > span > select”,
“Value”: “”
},
{
“Command”: “select”,
“Target”: “css=#action-panel-report > div > div.options-renderer-form > ul > li.options-renderer-category.clearfix.options-renderer-category-selected > p > span > select”,
“Value”: “label=Scams / fraud”
},
{
“Command”: “click”,
“Target”: “css=#action-panel-report > div > div.options-renderer-form > ul > li.options-renderer-category.clearfix.options-renderer-category-selected > p > span > select”,
“Value”: “”
},
{
“Command”: “click”,
“Target”: “css=#action-panel-report > div > div.options-renderer-buttons.clearfix > button.yt-uix-button.yt-uix-button-size-default.yt-uix-button-primary.options-renderer-button-submit > span”,
“Value”: “”
},
{
“Command”: “storeEval”,
“Target”: “${!csvReadLineNumber}+1”,
“Value”: “!csvReadLineNumber”
},
{
“Command”: “csvRead”,
“Target”: “YT flag.csv”,
“Value”: “”
},
{
“Command”: “endWhile”,
“Target”: “”,
“Value”: “”
}
]
}

4

Do you get "[error] until: new tab creates ipc expired!"?

If so, this is because !COL1 probably contains no valid URL, so selectWindow can not open a new tab.

5

No the exact phrase it uses is: “[error] until: ipc of tab to play expired!”.

6

Any ideas on this error? Still not sure why the macro works fine on my computer but the second I send it to him it doesn’t work for him.

7

Sorry, no new ideas yet. The challenge for us is to find a (test) machine where we can see the error and debug it. The guess is that it is some kind of timing/timeout problem… but without debugging the issue it is hard to tell exactly.

8

So I started getting this error a lot in the last couple days and I figured out something that hopefully might be useful info. Basically I get this error if i try to run it on a blank tab. But if I go to a website, say espn.com or whatever, and then run it on that tab it will play.

Also it only appears to happen on the macros where I’m running a while loop to open new tabs. Is there something wrong with the code I’ve written?

{
“CreationDate”: “2018-6-15”,
“Commands”: [
{
“Command”: “csvRead”,
“Target”: “xxxxxx.csv”,
“Value”: “”
},
{
“Command”: “store”,
“Target”: “true”,
“Value”: “!errorIgnore”
},
{
“Command”: “store”,
“Target”: “false”,
“Value”: “!Waitforvisible”
},
{
“Command”: “while”,
“Target”: “"${!csvReadStatus}" =="OK"”,
“Value”: “”
},
{
“Command”: “selectWindow”,
“Target”: “tab=open”,
“Value”: “${!COL1}”
},
{
“Command”: “storeEval”,
“Target”: “${!csvReadLineNumber}+1”,
“Value”: “!csvReadLineNumber”
},
{
“Command”: “csvRead”,
“Target”: “xxxxxx.csv”,
“Value”: “”
},
{
“Command”: “endWhile”,
“Target”: “”,
“Value”: “”
}
]
}

9

Thanks for the hint. => Please try again with Kantu V3.1.0, released today. This should fix this issue. Does it work for you?

10

Unfortunately no it’s still happening when I try to run it off a new blank tab, but if I run it from a tab with content it will run.

11

IPC issues are fixed with Kantu V3.1.6 :grinning: