With a lot of help from Henri we managed to compile a viewer with jemalloc memory allocator, which should greatly improve stability on the mac version of the viewer. You can try it here.
http://cattencarter.com/CoolVLViewer1.26.12.24.1.zipMD5(CoolVLViewer1.26.12.24.1.zip)= 8f22176e5221fcf05b2ee6153ba0daad
SHA1(CoolVLViewer1.26.12.24.1.zip)= c9876243532ceba4eb2c1332f7cb57d9e6c03840