Check that you're using Gmail in US English.

Please check to ensure that you're using Gmail in US English (unfortunately we're not able to support the non-US English versions of Gmail at this time).

Check that you have the new version of Gmail.

You have the new version if you see an "Older version" link at the top right in Gmail. If you're using an international version of Gmail, or Gmail with Google Apps, you may not have the new version yet.

Enable third party cookies in Firefox.

To allow logins to Remember The Milk, please follow these steps:

For Windows:

1. Click the Tools menu at the top of your browser, and select Options.
2. Click on Privacy.
3. Press the Exceptions button.
4. Enter rememberthemilk.com
5. Press the Allow button.

For Mac:

1. Click the Firefox menu at the top of your browser, and select Preferences.
2. Click on Privacy.
3. Press the Exceptions button.
4. Enter rememberthemilk.com.
5. Press the Allow button.

Make sure the extension appears in your browser's list of add-ons.

To see this list, click the Tools menu then Add-ons. If Remember The Milk for Gmail appears, make sure it's enabled (i.e. not grayed out). If it's grayed out, you can enable it by selecting the extension, clicking the Enable button, and restarting your browser.

Check that the tasks pane is not collapsed.

You can expand it by clicking on the small arrow on the right of the page in Gmail.

Check for filtered tasks.

Please check to make sure that you're not filtering your tasks (e.g., only showing a particular list). This option is shown directly underneath the Add task field at the top of Remember The Milk for Gmail. If you're showing all your tasks, it should say Set task view here; if you're not showing all your tasks, you can click the arrow and change the option here.

Clear cache and cookies.

Please clear your cache and cookies and restart the browser before trying again, in case your browser's cache needs clearing.

Access with HTTPS.

Please try to access Gmail via HTTPS (replace the 'http://' in the URL with 'https://') to force Gmail (and Remember The Milk) to load via a secure connection (this can help if something is blocking Remember The Milk from loading properly).

Disable Gmail Labs.

A feature in Gmail Labs may be conflicting with Remember The Milk for Gmail. Please try disabling Gmail Labs and reloading Gmail.

Disable other Firefox extensions.

There are a number of Firefox extensions and Greasemonkey scripts available that make modifications to Gmail. If you are experiencing a problem with this feature while using another extension that modifies Gmail, we would recommend disabling the other extension, restarting Firefox, and seeing if that resolves the issue. If you do encounter an extension conflict, please tell us so that we may investigate further (however, please note that we cannot guarantee compatibility with other extensions or scripts).

We're sorry we weren't able to resolve your issue. Please submit a report about the issue you're experiencing; we read every report that we receive so that we can continue to identify and resolve new issues.

Yay! We're glad you were able to resolve your issue.