closing curly brace unrecognized

*To*: mathgroup at smc.vnet.net*Subject*: [mg104003] closing curly brace unrecognized*From*: dushan <dushanm at spinn.net>*Date*: Thu, 15 Oct 2009 07:17:02 -0400 (EDT)

I have Mathematica 7.0.1 installed on a Mac running X.4.11. I've just run into the problem (again) that the closing curly brace isn't recognized. Trying to enter a vector, I write vR = {w Cos[k z], w Sin[k z], z} and on hitting Shft-Enter the left curly brace is highlighted and the message lines appear, Syntax::bktmcp: Expression "{w Cos[k z],w Sin[k z],z}" has no closing "}". Syntax::bktmcp: Expression "{w Cos[k z],w Sin[k z],z}" has no closing "}". Syntax::sntxi: Incomplete expression; more input is needed. I tried variations of: deleting/adding a closing curly brace, adding an extra curly brace, replacing the opening & closing braces with brackets, etc., and nothing seems to help. Previously, to get comfortable with the notation, I was able to enter such expressions as v = {X,Y,0} and then use 'v'. What's going wrong? - Dushan Mitrovich