errormessage on SoftwareServo with Potentiometer

Hi all
the following basic_code SoftwareServo with (10k) Potentiometer.

    displays the following errormessage:
    error: SoftwareServo.h: No such file or directory In function ‘void setup()’:
    In function ‘void loop()’:

whats wrong?
Please, i need your help
MANYmany thanks

// example for SoftwareServo new name library

// The following code lets you control Servo on pin2 by potentiometer on analog 0

#include <SoftwareServo.h> 

SoftwareServo myservo;  // create servo object to control a servo 

int potpin = 0;  // analog pin used to connect the potentiometer
int val;    // variable to read the value from the analog pin 

void setup() 
  myservo.attach(2);  // attaches the servo on pin 2 to the servo object 

void loop() 
  val = analogRead(potpin);            // reads the value of the potentiometer (value between 0 and 1023) 
  val = map(val, 0, 1023, 0, 179);     // scale it to use it with the servo (value between 0 and 180) 
  myservo.write(val);                  // sets the servo position according to the scaled value 
  delay(15);                           // waits for the servo to get there 


If you are using the library from the playground page here: then the downloaded files in the zip are named servo.cpp and servo.h. This conflicts with the hardware servo library distributed with recent version of Arduino so you need to rename both files and the directory to something else. The directory name and the file names must match and must be in the library subdirectory.

many thanks mem! All is OK now!