At least one startup service is missing the 'attribute' attribute
Visual Studio 2005
A startup service requires the ID attribute, which was not found on a <Service> element. For example:
<Service ID="{0000-0000-0000-00000000-000000000000}"/>
This indicates that the project file is corrupt.
This error is most likely caused by editing the project file by hand.
To correct this error
-
Save the project file.
The defective section will not be written out and this error will not occur the next time you open the project.