I implemented a new change yesterday (21-7-11) That resolves this issue. Please report any problems to the forum. Some users are experiencing problems switching between projects using the drop-down list project selector at the top of the page. This is caused by your browser caching ( creating a local copy ) of your pages. Typically this is caused when you copy a project and then rename. The browser caches the copy and when you rename the project copy no longer exists.  We are currently working to fix this issue. However it is simple for you to resolve. To switch projects go to the project list and choose the tasks button for the project you wish to work with. This will load the correct project into your browser irrespective of the name change. Please see the image below.