error compile STR91x mcu project

Good morning,

 I'm using CrossWorks Studio with the free development license mode (<16KB limitation size) for ARM devices and I have installed manually the basic libraries (libctl.HZQ) and the STR91X Support Package (ST_STR91X.HZQ) needed in order to build a simple project, but I CrossWorks Studio detects some errors: some files (such as STR91X.c) are missing: I don’t know where bring them, I supposed they were into the support package I previously installed. Or I miss anything else?

Regards,

Lorenzo