Invalid Freed with CA_FreeMemory

I'm using Labwindows CVI FDS 10.0

Hello, I get the error "Invalid Freed" from the function CA_FreeMemory.

First I allocated the memory with:

...

case (CAVT_SHORT | CAVT_ARRAY): 

ConvertirVariant=CA_VariantGet1DArray (&Variant_Item, CAVT_SHORT, &Leer_ASHORT, &Nvalores);
break;

Later y want free this memory ...

CA_FreeMemory(Leer_ASHORT);

and I get the message Invalid : Freed

Many Thanks