Erik, if this sutiation is still actual.
Could you try to do the following:
Open Window->Preferences Dialog.
In the dialog open JBoss Tools->Web->Editors->Visual Page Editor->Content Assist Page
There are 2 checkboxes: "Show Getters and Setters for the properties" and "Show Methods Only with Prentheses". How are they set?
Try to play with these preferences. Will the error markers disappear?
The default values are:
- Show Getters and Setters for the properties - is not checked
- Show Methods Only with Prentheses - is checked