Cannot Expand/Collapse tasks in Microsoft Project 2010

As with the previous post, closing and re-opening fixed the problem. One note is for the project in question, a previous editor had saved it with a filter on the resource names, so that when I opened it that filter was still in place. After removing the filter the +/- to expand/collapse tasks did not work. I saved the project without the filter, then closed/reopened and all worked normally.

I found that closing and reopening the project file resets your cursor. There is probably a more elegant solution, but I don't know that it is.

I have also experienced the problem. In my case I had created filters on tasks only (not resources) and then was unable to expand or collapse subtasks with the mouse on the task icon. Even though I did not have my defined filters "on". I had to delete my defined filters from the Global filters list in the Organizer, then close the Project application and restart to be able to restore the use of the cursor to expand or collapse subtasks.