[TYPO3] Problem after Typo3 upgrade :-(

[Nino Katic]

Hello,

After upgrade from ver. 3.8.1 to 4.1.6 i get following php warning when 
displaying page:

Warning: xml_parser_set_option() [function.xml-parser-set-option]: 
Unsupported target encoding "iso-8859-2" in 
/www/htdocs/typo3_src-4.1.6/t3lib/class.t3lib_div.php on line 2174

I searched for a solution but only one i found was to change encoding to 
UTF8. I can't make this because all sites under my Typo3 are made with 
iso-8859-2 encoding. Is there a way to solve this? Thx.

Nino