Windows 7 & OS X 10.10.3
Broken: (Blender 2.74)
Worked: (Blender 2.72)
Short description of error
The Vertex Connect tool (Jkey) fails to connect multiple verts in an N-gon. This is a regression compared to older versions, such as Blender 2.72.
Lets see you have an N-Gon and you want to connect some of the vertices with Vertex Connect. You select some verts:
Press the J key, and you get this error:
In Blender 2.72 this worked perfectly, as you can see here:
Exact steps for others to reproduce the error
Open this Blend:
press J to connect the verts in the N-gon and watch it fail.