Project <name> has been modified. Do you wish to save the changes now?

This error has the following causes and solutions:

• One of the property settings or a code statement has changed for one or more of the files in the project and the changes have not yet been saved. This is your last chance to save the changes before loading another project.

For additional information, select the item in question and press F1 (in Windows) or HELP (on the Macintosh).