[TYPO3] RTE Spell Check

[Lamb, Brian]

Hi all, 

 

I have aspell compiled but cannot get it to work with rtehtmlarea. I get
the check box when I edit content but when I click it, a new window
opens up and displays the following message: 

 

Fatal error: Call to undefined function mb_internal_encoding() in
/opt/software/typo3_src-4.1.3/typo3/sysext/rtehtmlarea/pi1/class.tx_rteh
tmlarea_pi1.php on line 164

 

Has anyone run into this problem?