As you can see in the attached screenshot there is not enough space to display
the warning messages in the "Edit Attribute" dialog when editing the
"MIDlet-Version" attribute.

To reproduce the problem simply create a mobile application project (New
Project->Mobile->Mobile Application), open the project properties window, go to
the "Application Descriptor\Attributes" panel, edit the "MIDlet-Version"
attribute and clear the "Value" field. You will see that a warning message is
displayed under the placement combobox. The problem is that you only have the
extra text between the "Value" input field and the "Placement" combobox when
editing this attribute and someone forgot to increase the dialog size for this case.