You can delete that file- it's just a crash dump report.
If you get any similar messages, try a boot time scan with avast! Right click the scanner screen, select 'schedule a boot time scan' and reboot when requested. (Or open the tab at the top left of the scanner screen and select the boot time option from there.)
If you're running avast! for the first time, it's a good idea to run a boot time scan anyway.