when I start a debug session, a message say me " EVALUATION VERSION Running in eval mode (4k) " I don't understand why Please, help me!!
It means that you are running the evaluation version of the tools, which have a number of limits on the size of projects you can build.
"...limits on the size of projects you can build." Not just the size - full details here: http://www.keil.com/demo/limits.htm