Why no error mesages?

pls. paste the first 10 lines of your script here.

def CheckAlertsAfter():
 # Global variables
 global AlertsBefore
 switchApp("SSC MSS 6000") # switch to MSS 6000
 click(imagePath+"PropAlerts.png") # find Alert tab
 AlertsAfter = capture(1792,113,245,320) # GÖR OM TILL ATT HITTA ALERTS-REGIONEN
 if AlertsBefore == AlertsAfter:
  print "same"
  break
 else:
  print "diff"
  break

Error point at first break

Are the 3 lines in your post

[error] Stoppad
[error] Ett fel uppstod på rad 7
[error] Felmeddelande:

really the only text? there should be something like:

[error] Abgebrochen
[error] Ein Fehler in Zeile 4
[error] Fehlermeldung:
SyntaxError: ("'break' outside loop", ('/var/folders/C9/C9+A8gl7F9GRQtCP6jc+VU+++TI/-Tmp-/sikuli-tmp2636007879302044051.py', 4, 4, ''))

because break cannot be used as you try to use it

I guess you want to leave the function at this point: use return instead of break.

Yea just that text, no explanation what so ever. Is it perhaps cuz my computer language is swedish?

What's your system language? It looks like a bug in that language's translation file.
Can you switch your system language to English or others temporarily and see if it works?

My system language is swedish and im running xp prof so can´t change.

Try this. Make a copy of the Sikuli-IDE.bat in the Sikuli folder, and append "-Duser.language=en_US" to %JAVA_EXE% on the last line. Run this modified bat, and you will see the English interface.

Perfect thank you!

Thanks Tsung-Hsiang Chang, that solved my question.