[Users] Build error

[Steven R. Brandt]

I'm getting the following build error with the Chemora code base on 
Supermike:

COMPILING 
/work/sbrandt/Cactus/arrangements/McLachlanCaKernel/ML_BSSN_Host/src/ML_BSSN_Host_convertFromADMBaseGamma.cc
/work/sbrandt/Cactus/arrangements/McLachlanCaKernel/ML_BSSN_Host/src/ML_BSSN_Host_convertFromADMBaseGamma.cc(191): 
error: argument of type "__m256d" is incompatible with parameter of type 
"double"
       ptrdiff_t dir1 = Sign(beta1L);
                        ^
Apparently it's unhappy with some of the vectorization. Any idea what 
should be done about it?

Cheers,
Steve