The signature for isAbstractClass() didn't match the one defined by MPxNode (it isn't const). By prefixing it with virtual we introduced another virtual method into the class definition,  destroying binary compatibility and resulting in crashes. Removed the virtual prefix and added a bug note and todo for the future.
The signature for isAbstractClass() didn't match the one defined by MPxNode (it isn't const).
By prefixing it with virtual we introduced another virtual method into the class definition, 
destroying binary compatibility and resulting in crashes. Removed the virtual prefix and added a
bug note and todo for the future.


danieldresser/cortex,hradec/cortex,danieldresser/cortex,danieldresser/cortex,lento/cortex,davidsminor/cortex,lento/cortex,davidsminor/cortex,appleseedhq/cortex,appleseedhq/cortex,davidsminor/cortex,appleseedhq/cortex,danieldresser/cortex,hradec/cortex,goddardl/cortex,goddardl/cortex,lento/cortex,hradec/cortex,davidsminor/cortex,goddardl/cortex