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Sometimes and it's rather random, Badly formed string appears instead of project name.It's nor restricted on any particular project type,I've seen it in different types of projects.When you check project attributes,it's OK and also pom.xml looks fine. Also,this often happens when I've default named EAR generated in IDE and also for example web app with the same default name as war (only different in after part).
hele jardo! you seem to be filing this sort of issues every month. And I always tell you to attach a messages log and what the Show problems dialog output.
for example 175794, marking this one as duplicate of that *** This bug has been marked as a duplicate of bug 175794 ***