[TYPO3] internal server error with insert link rte HTMLarea (1.2.0)

[Rob De Vries]

Hey,

All my functions for the RTE htmlerea(1.2.0) works as supposed and gives 
no error reports for the plugins, except for the insert link.
This gives me a pop-up with an internal server massage.

Someone hass have the same error and even has a sollution to this?

tnx
Rob

ps : same problem with previous versions