New rig, worked fine out of the box. Decided to change mulipool address this morning and now the cgminer program won't open. Well, it opens for a split second then vanishes. It is the latest version available I believe - 3.7.2.
Any ideas what I'm doing wrong?
3.7.2 is over 6 months old. The latest version is 4.2.3, though you may be trying to GPU mine which has long since been deprecated and all support removed from cgminer.