Show Cue System

We use scs for e linear show with cues containing audio and videofiles. Ther are around 60 cues. In the setup we say that scs should pre-cache the next 30 videos. Sometimes after useing 30-40 cues during the next cue in the cuelist is marked as "not chached".
Is there a way to force scs to cache the whole show in to the RAM in linear mode?
or
is there a way to put in a higher preload video number than 30 videos ?
or
is there a way to force scs to cache the next videos while playing a video ?

Thanks 4 your help

That error message ("not cached") does not come directly from SCS so I suspect it has been raised by the video playback library used by SCS. A log file will have been created and saved in a folder named "SCS Logs" under "Documents", and the name of the file includes a time-stamp indicating when the log started. Please email me the log file from a run in which this error occurred.