Hi,
If I compile this simple file with context (TeXLive 2015), no problems.

\setupcolors[state=start]

\usemodule[tikz]

\starttext
\starttikzpicture
\draw[<->,red] (0,0) -- (3,3);
\stoptikzpicture
\stoptext

If I compile with the latest version of context Standalone, I get the following message :

tex error       > tex error on line 8 in file /home/fab/ntg32.tex: ! Package pgfkeys Error: I do not know the key '/tikz/animations/whom', to which you passed '[scope]@auto', and I am going to ignore it. Perhaps you misspelled it.

Thanks,

Fabrice