I have projects of several types open in netbeans simultaneously; a thick java client using swing, and a JavaEE project using tomcat. When the tomcat project is "running" [which specifically appears to mean that tomcat is running], I am unable to make the "play" button for the thick client work; it is permanantly greyed out.

Steps to reproduce:
1. Create new project of type "Java Web Application" using tomcat as the server
2. Create new, separate, project of type "Java Application"
3. Go to Run->Set Main Project->{Choose web app}
4. Click play/run green arrow. Watch as stuff happens for a moment or two.
5. Right click on the Java Application, click "Set as Main Project"
6. Notice that build/play/etc buttons are all greyed out.
7. I have not discovered a way to un-grey them without restarting the IDE.

Obviously this is a large issue because it means I cannot have both Web projects and {other projects} running at the same time.

Please re-visit bug #213034. I believe the entire behaviour of greying out the build and play buttons is a major issue that should just be resolved by allowing them to never be disabled, possibly as an option in the IDE.