I created a part outside of solidworks and imported it in. It seems to have imported in fine without any interferences. When i apply the constraints and loads it works fine but I cant mesh the part. I keep getting the same error message. I uploaded a screenshot can anyone please help me. 
Hi.
Well, the part looks like it is meshed already, so one problem is that all small surfaces requires a very fine mesh setting. More than one element is required in each splitted surface so set the mesh size manually after first measuring the size of the surfaces. Also see if it works better with curvatured base mesh.