We're required to put a Country code in the K-2 and for RICs, the IRS says to use OC for Other Country.  Lacerte has no option for OC, Other Country, Various, RIC or anything.  I just so happened to try to type OC in the field then hit escape because there was no result and magically the field filled in with OC.  I put in a request that they fix this glitch, but hopefully it will help some of you poor souls out there.