I did absolutely nothing to it...just clicked on it again, and tequila launched, validated, and is ready to play. I'll post another reply if it happens again.
So...played just fine last night. Launch Tequila this morning, and get the following (copy & pasting)
Manifest download error for http://patch.savecoh.com/manifest.xml
The remote name could not be resolved: 'patch.savecoh.com'