How can I stop the Error Console from popping up everytime I open Firefox?
Every time I open Firefox or sometimes opening attachments the Error Console Window shows up.
Alla svar (1)
This is likely due to an extension. For example, the Web Developer extension has a setting to open the error console, and some mouse gesture extensions have been known to open the error console.
To track down what extension is causing this for you, follow the procedure in this link - https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes