UtfNormal::loadData(UtfNormalData.inc)

I have this error all the time in my php error log:

[client ...] PHP Warning: 
UtfNormal::loadData(UtfNormalData.inc) [<a 
href='function.loadData'>function.loadData</a>]:
failed to open stream: 
Operation not permitted in
...wiki/includes/normal/UtfNormal.php on line 
224, referer: 
...wiki/index.php?action=edit&preload=&editintro=&am
p;title=...&create=Add+a+new+Article

[client ...] PHP Fatal error:  UtfNormal::loadData() [<a 
href='function.require'>function.require</a>]:
Failed opening required 
'UtfNormalData.inc' 
(include_path='...wiki:...wiki/includes:...wiki/languages:/u
sr/share/php5') 
...wiki/includes/normal/UtfNormal.php on line 224, referer: 
v/index.php?action=edit&preload=&editintro=&titl
e=...&create=Add+a+new+Article

I cannot use special charcters (only ASCII), now can I
include uploaded 
images [[Image:File.jpg]]

any ideas? cheers

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