Bug fixes for both versions

[aurora]

I fixed the problem with loading previous versons of saved attractors. Note this is an extremely limited fix in that I won't guarantee it will load anything older then the last couple versions. But from here on out this will not be a problem. As much as I wanted to allow you to open a param file saved from Modeler into Layout and the other way around its not something that I can do right now due to data typing. But if you accidently happen to try this a message will come up and notify you that it can't load it and why.
I also fixed the mulitiple instance issue with the Layout version. You can now create a new null, add another attracotr and then hook up HV's to it without problems.

A_AttractorV_0_2_7.zip (Right click save as)
A_AttractorModV_0_1_6.zip (Right click save as)