A user by the name of jrboddie has found a solution for us. Here is his post on zbrushcentral.
"I was able to get this to work tonight with Blender 2.71.
I used the latest Blender plug-in (for 2.69) and the extracted Blender folder from the older version for the Zbrush part.
After placing the ‘Blender’ folder in the Pixologic/GoZApps, Zbrush failed to recognize Blender as a possible connection app. My mistake was copying the wrong ‘Blender’ folder. The correct one is inside the Zbrush folder in the zip file and contains a single text file: GoZ_Info.txt. After correcting this and restarting Zbrush, I was able to then set the path to Blender.exe.
I installed the Blender plug-in (for 2.69) in the usual way and enabled it. The two buttons appeared in the menu bar. I crashed Zbrush by trying to export the cube from Blender so I assumed that Zbrush was not yet fully configured.
Restaring Zbrush, I brought in a cylinder, switched to edit mode and made it a Polymesh 3D object. Then in the GoZ line of buttons I hit R to reset the GoZ tool, then exported to Blender. The new GoZ import button in Blender brought the cylinder over. I then exported the cube from Blender to Zbrush without a crash.
Basic stuff, and I don’t fully have a grasp on the whole workflow, but perhaps this will help some of you who have run into some of the issues that I found."
I can confirm that this works for me. Give it a try guys. Thanks jrboddie for figuring this out.
When you send a mesh from blender back to ZBrush it will create a new tool/subtool separated from your “Project” tool. All you have to do is Append this tool back into your “Project” tool and it will be in the proper place.