Hi Iván, On 07/15/15 21:29, Iván Matellanes wrote: > +CRITICAL_SECTION ios_static_lock; ... > +CRITICAL_SECTION ios_static_lock = { &ios_static_lock_debug, -1, 0, 0, 0, 0 }; This will not compile when Microsoft Visual Studio is used (variable redefinition). Please use "extern". Thanks, Piotr