Due to a bug in the new CDT, the plug-in is not able to create new projects in 3.7.
The bug was reported and acknowledged by the CDT team.
Time permitting (November?), I'll try to take a look at this bug and suggest a patch.
Liviu Ionescu (ilg)
fixed in 0.5.4.201111262136
To be noted that the bug that prevented this plug-in to run in CDT 8.0 is still there, but once identified, I found a way to avoid it. (by removing "name" attributes from projectType elements in plugin.xml).