InvalidDocumentError when using Action Wizard

[defaultzqmtp3vkylg0]

I am trying to run a date stamp script through action wizard, which works when run on a single file through the console. The script is

for (var p = 0; p < this.numPages; p++) {var f = this.addField("Date", "text", p, [350, 770, 600, 790] ); f.value = "Document Received: " + util.printd("mm/dd/yy hh:MM:sstt", new Date());}

When run I get the error InvalidDocumentError: Method called on invalid document objec: document.addField().

Thanks for the help!

[Bernd Alheit]

Before for loop add this lines:

  console.show();

  console.println(this.path);

Then you can see where the action stops.

[defaultzqmtp3vkylg0]

I added the lines and ran it and it output 4: which I assume means the script failed on the fourth line which is var f = this.addField("NextPage", "text", p, [350, 770, 600, 790] ); I believe it is an issue with the this.addField, but this is my first time using javascript and I am unfamiliar with how this interacts.

[Bernd Alheit]

Check the document where it stops.

[defaultzqmtp3vkylg0]

It stops at the first document

[Bernd Alheit]

Run the script in the console.

[defaultzqmtp3vkylg0]

It works fine in the console, which is why I am confused when it fails when doing multiple files.

[Bernd Alheit]

Can you share the document?

[defaultzqmtp3vkylg0]

The documents I am working with have sensitive data, but it fails with this sample pdf.

[try67]

Works fine for me. What other commands did you add to the Action?

[Bernd Alheit]

No problem with this file.

[defaultzqmtp3vkylg0]

That's the only action I'm performing.

[defaultzqmtp3vkylg0]

Well, thanks for the help, I thought there was an issue with the code that I did not understand, but now I know the code is all right, it seems to be an issue with the version I'm running.

[Bernd Alheit]

Repair the Acrobat Installation.

[try67]

Well, you should at least add a command to save the file after executing the JS code...

[Thom Parker]

Acrobat is having a problem with the "this" keyword. In most cases "this" is a pointer to the current document, which in a batch process is supposed to be the document currently being processes. However there's definately a problem with "this". It's saying the document is invalid. This usually happens when using a doc object after the actual document is closed. 

The real pointer to the current object in  batch process is "event.target", try replacing "this" with "event.target"