String error message on arduino

Hi, I'm using arduino library 0022 to program my weather station. I have a error message like this

USB_weather_board:85: error: 'class String' has no member named 'append' USB_weather_board:93: error: 'class String' has no member named 'contains' USB_weather_board:95: error: no matching function for call to 'String::toCharArray()'

Anyone know the solution please advice

Thanks

Without the rest of your code, any suggestions would be guesses (at best.)

Educated guesses, though.

The String library was incorporated into the Arduino core set of libraries, and modified at that time, but not renamed. The error messages are those that you get when you expect the older library to be in place, when, in fact, it is the newer library that is present.