error in after lanching emulator -

i launched emulator, after displaying vitual device in system following errors occuring:

renderer error: failed create/resize pbuffer!! draw: not use program error=0x505 draw: not use program error=0x505 draw: not use program error=0x501 draw: not gldrawelements() error=0x505 failed alloc 16777216 bytes readbuffer 

suddenly, loading of virtual device stops. should now?

i had same errors 2 days, how solved issue

1. downloaded appropriate system image(64 / 86 system)
2. allocated less memory(in case 700mb) in avd manager while creating new device(my system has 4gb ram)
3. restarted emulator