This message is generated when a string that does not have the form of a context string is used to specify a context.
A valid context string ends in a backquote character and does not include characters such as minus signs, plus signs, asterisks, and other characters that have special meanings in input.
Off[message] switches off the message; On[message] switches it on. For example: Off[Context::cxname].
Examples
Basic Examples(1)
The string used to specify a context must end in a backquote character:
This example shows a valid context string:
Context strings cannot include characters such as the asterisk character: