Please update to the latest version of Project manager pro which is v1.3.1. In our latest version we have included frontend feature. So, Project manager frontend add-on is not needed to show project on the frontend.
I am also experiencing the same issue as Chad describes. On the frontend, the search fields appear, but there is no search button to press ?? This issue occurs after updating Proj Mgr Pro to v1.3.1 and removing the unneeded frontend plugin.
I must say, I was thrilled when v1.3.1 update completed successfully in wordpress without any errors. The update is just about bug free :).
While you are looking at it, I also observed another issue with v1.3.1. As admin I cannot create a “duplicate” project. Just thought I would mention this as well. But, I'll probably open another forum entry so as not to confuse.