Can someone explain the content and detail of this message:

com.maplesoft.mathdoc.model.plot.PlotException: Unrecognized option in COLOR: RGBA

solve({-infinity < a , a < -1, -1 < b ,  b < 0});

I believe this is a bug:

 
(((Q(a)^3)^(5/4))^(15/7))^(6/8);
subsindets(%, anything^rational, proc(x) if type(x, specfunc(anything, Q)^rational) then 'Q(x)' else 'x' fi end)<>
subsindets(%, specfunc(anything, Q)^rational, Q);

Why am I not able to use my MaplePrimes login credentials to login into MapleCloud?

When writing a post on MaplePrimes it is possible to access the source code, which allows to introduce/edit many attributes. Is it possible to observe the source of another post?