Add the following line to the file. [Add this new line after the line "captions 0", and before the "video" line. The format for these configuration lines is "Word[tab]value or phrase".]
OBJMEMSIZE 3000
This line can be used to set your object memory size to any value between 2500k [the default value] and 9000k [the maximum value]. If you are NOT experiencing problems, leave the value at the default 2500k. A value of 3000k should be sufficient for most users.
EXAMPLE of spire.cfg with user-defined object memory size
path C:\BATSPIRE\
pathcd D:\
bypass 1
captions 0
OBJMEMSIZE 3000
video #9 V.T.C. MotionFX 771