Hey Brad.
If you mean in the ingredients area, I haven't set any custom columns. When I right click there, it says "customize columns", but that's greyed out and I can't select it. So, haven't done anything there. Guess that's available through options or something?
As you surmised in my other thread, though, I *am* running Beersmith from my Dropbox folder to sync it on my Mac and Windows box. This particular error is coming up on both computers. The Windows laptop is running Vista Home Premium, the iMac is running Snow Leopard, think it's 10.6.8.
It doesn't seem to be causing any troubles though. Haven't noticed any quirky behavior of any kind.
Oh, and just downloaded build 46 and the error still occurs on the Windows laptop. Haven't checked the iMac yet.