Firefox Error Console
How to use the Firefox Error Console to report a problem.
The error console is useful on the (rare!) occasion that iMacros stops working completely or creates another "strange" issue.
Example: Here is a typical forum post where the error console output helped us the fix the issue: V184.108.40.206 BETA is completely disabled
How To Enable Error Logging
View and Report Error Messages
Editing Configuration Files Firefox KB Article