http://www.keil.com/forum/61598/
People from ST are not monitoring this site.
The error is indicative of the compiler not using the right include files, you will need to adjust the Include Path settings to a directory that has contemporaneous files in it. You might need to review the dates on other files, or descriptions of the library in question.
Whenever you want information from a specific manufacturer about their specific product, you should go to their website.
Note that ST people don't monitor the ST Forums - if you want support from ST themselves, you need to go via their Support System: https://my.st.com/
This is fairly typical of chip makers - and is also the official policy here on Keil's forum:
http://www.keil.com/forum/ - See the first bullet point under Note.
The other option for direct support is to speak to your Distributor ...