Error Codes appearing while installing OS/2 in Vbox

I am running Windows 7 Ultimate x86, with a Virtual Box version 4.0.0r69151. Every time I try to install the OS/2 in Vbox, there are codes that I get like these:
- The system detected an internal processing error at location ##0160:fff5fbd5 – 000d: 9bd5.
- The system is stopped. Record the location number of the error and contact your service reprehensive
- TRAP 000e ERRCD=0000 ERACC=**** ERLIM=********
- Internal revision 6.514, 93/04/12
How could I install the OS/2 in Vbox properly without getting these errors?
