error is..

athonion dosbox-0.61 # dosbox
CONFIG: Using default settings. Create a configfile to change them
X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 148 (MIT-SHM)
Minor opcode of failed request: 3 (X_ShmPutImage)
Serial number of failed request: 40
Current serial number in output stream: 41

gentoo 1.4 and X11R6 4.3
and athlon-xp