Signature verification failed

Question

Hi all,
I've been seeing a really weird problem with signing my HTML5 extension for Illustrator. I'm using the ZXPSignCmd tool to create a .zxp bundle and sign my extension from the command line. I'm able to install the extension using the Extension Manager, and I've also been able to distribute it to a private group through Adobe Exchange. It installs just fine, and runs great the first time, but after closing Illustrator and reopening it the extension often fails to load and just shows a blank window. I'm on a Mac, and looking at the log file here shows the following error when it happens:
/Users/<<userName>>/Library/Logs/CSXS/csxs-ILST.log
2014-12-17 10:18:02 : ERROR Signature verification failed for <<extensionID>>
This is the only indication I have that it is a problem with the certificate. It seems really strange that it installs without errors and works once, but then fails when trying to load again. I was using a self-signed certificate, but I just bought a certificate from DigiCert to see if that would help, but I'm still having the same problem.
This actually happens very rarely on my machine, but happens frequently to my other users. I assume this is somehow because I have been doing the development on this computer, so something is different about my extension environment.
Has anyone else seen this issue at all? Does anyone have any tips that might help me to debug this? Other log files to look at, potential problems with the certificate or manifest file? I've tried about everything I could think of, so any help would be greatly appreciated!
Thanks,
James

Answer 1

Nailed :-)
For the folder you might save files into, there are few tokens in CEP:
/* Identifies the path to user data.  */
SystemPath.USER_DATA = "userData";
/* Identifies the path to common files for Adobe applications.  */
SystemPath.COMMON_FILES = "commonFiles";
/* Identifies the path to the user's default document folder.  */
SystemPath.MY_DOCUMENTS = "myDocuments";
/* Identifies the path to current extension.  */
/* DEPRECATED, PLEASE USE EXTENSION INSTEAD.  */
SystemPath.APPLICATION = "application";
/* Identifies the path to current extension.  */
SystemPath.EXTENSION = "extension";
/* Identifies the path to hosting application's executable.  */
SystemPath.HOST_APPLICATION = "hostApplication";
Otherwise you can rely on JSX folder tokens such as Folder.appData, Folder.userData etc (see a complete list on pages 56-57 of the JavaScript Tools Guide pdf) and create your extension's own folder.
Mind you, CEP extensions should support both indexedDB and localStorage - one of them might fit your needs.
Best
Davide Barranca
www.davidebarranca.com
www.cs-extensions.com