Sounds like he is using the 64 bit version of Maple 15 or Maple 16. 

The shipped version comes with both 32 bit and 64 bit.  The 64 bit version of only Maple 15 and Maple 16 have limited Finance package use but the 32 bit version has full functionality of the Finance package.  Install the 32 bit version and you will be able to use the finance package without error.

There is some good information here, no need to delete your question.

@rollermonkey As Carl and Acer have provided your solution, use with(plots) and not with(Plots) the error message you posted shows you are capitalizing plots when it is not valid.

Your G=plot3d([x,sin(x),2sin(x)+cos(X^2)], x=-2..2,color=black)   will produce an output but it won't assign the output to anything which is why you come across the error when you try to use G later on. 

withPlots returns withPlots but Maple is only returning your input and hasn't done anything with it.  If I type Hello Maple says Hello back but there's no actual execution of commands just a mirrored return which is why you see a blue syntax on the use of withPlots.

If you provide the exact error message associated with your use of := we will know how you are typing it in.  It is quite possible deducted above that you have inserted a space between : and =

Just remember to restart or start a fresh worksheet, it could be a bad install but most likely the syntax.

@gkokovidis whoops, sorry about that I mixed it up with another document Maple 18 yes.  I updated the title of my previous post to reflect the correction thanks gkokovidis!

@Preben Alsholm Thanks for your help I appreciate your work.  Currently I'm getting a warning..

Warning, cannot evaluate the solution further right of 1.2176265, event #1 triggered a halt

I think that's expected.  Yes I realize it's adhoc, eventually I hope a solution can be found where the animation appears natural and Maple can simulate the ball rolling to stop as close to reality as we can.

So I'm not sure how to modify the ball application so the ball rolls to a rough stop in one of the troughs?

Updated comparison found here

http://12000.org/my_notes/kamek/version_1/KERNEL.pdf

@Joe Riel A CR:=0.3 will slow the ball down enough to stay within the field of view. 

But that doesn't matter expand the frame view and when the ball slows down enough it doesn't just roll along the surface.

Perhaps there is something about the surface normal that is causing the problems.  Any ideas? Anyone?

The other issue that exists is when parameteres are set to see the ball settle into one of the valleys the ball drops out, it doesn't settle to rest.  Is the issue internal or did something get missed in the equations?

@Joe Riel The one in the help under math apps -> engineering & applications.

In Maple 15 and 16 the finance package was only available in the 32 bit version.

Are all functions and packages available in the 64 bit version of Maple19(Maple 2015)?

I am lost when it comes to using api's and wrappers.

However I don't think an API or wrapper is necessary.  Perhaps there is another website that will allow HTTP from within maple to work without any javascript voodo.

The idea was to export text from the worksheet using some sort of HTTP or URL call from maple

If I can get the text above to work then it shouldn't be a problem.  The problem is I am unable to get that simple text above to work in any free translate websites to return translated text.

Can you provide a simple code that works to return some simple text translation within maple?

Funnily enough in a somewhat unrelated comment ... I was listening to the debaters on CBC argue for and against whether marriage or common-law was better.  Interesting stat mentioned was that 54% of first marriages end in divorce, more than 60% for the second and I think it was 80% for the third.  Then he put it in perspective and said that if you're standing on a sidewalk waiting to cross the street and knew that you only had a 54% chance of not making it would you still cross?  ie would you still make the plunge to get married? 

@nm I see.  In Maple18 it almost works as you describe.

A couple of things I notice

Within square brackets autocomplete will not autocomplete a user defined variable but it will autocomplete user defined variables in round brackets. 

In Maple 18 (document mode) autocomplete will pick up the autocomplete remove_RootOf command.  In your case for Maple 2015 I can not verify.  But also trailing characters an autocomplete bubble will not appear but esc will work.

Using the with command, some commands are not able to use autocomplete bubble until the second capital or even third capital letter of the command (an example would be some of the commands in the Finance package) another is the autocomplete won't complete until it gets to an underscore character.  This is for Maple18 again, I can't verify for Maple2015