VST PERFORMANCE OVERLOAD!

HI!

Since two or three days ago I have this problem with my Cubase Pro 8 (latest version updated)…

When I open any project and play it, in a few seconds the vst performance gets to the top (in red) and overload!!! with audio stops!!!

At the begging I though that it was the project I’ve been working, but I tried with another project that it never happened it, but it happened the same… I’ve never had this problem with any, any, any… of my project and all they have more than 4 or 5 effects, at least 8 or 10 vst instruments… What is happening? Any suggestion?

Some info about my mac:

Nombre del modelo: MacBook Pro
Identificador del modelo: MacBookPro11,3
Nombre del procesador: Intel Core i7
Velocidad del procesador: 2,3 GHz
Cantidad de procesadores: 1
Cantidad total de núcleos: 4
Caché de nivel 2 (por núcleo): 256 KB
Caché de nivel 3: 6 MB
Memoria: 16 GB

Please, help!

Thanks in advance!