How can i execute saved script?

That's my problem:

I make script normally and everything goes fine. Next I save my script and everything is fine, but when I later click "Open" and open my siculi folder and try to execute script, then in message fild is this:

[sikuli] Stopped
[sikuli] An error occurs at line 1
[sikuli] Error message:
Traceback (most recent call last):
  File "C:\Users\Krzychu\AppData\Local\Temp\sikuli-tmp2365603855181475470.py", line 1, in <module>
    click("1279360416395.png")
  File "E:\Przemek\Sikuli-IDE\sikuli-script.jar\Lib\sikuli\Region.py", line 119, in click
  Line 3, in file C:\Users\Krzychu\AppData\Local\Temp\sikuli-tmp2365603855181475470.py

 at edu.mit.csail.uid.Region.wait(Region.java:240)

 at org.python.proxies.sikuli.Region$Region$1.super__wait(Unknown Source)

 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

 at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

 at java.lang.reflect.Method.invoke(Unknown Source)

edu.mit.csail.uid.FindFailed: FindFailed: 1279360416395.png can't be found.
  Line 3, in file C:\Users\Krzychu\AppData\Local\Temp\sikuli-tmp2365603855181475470.py

I'm using win 7

What's the problem?