It is just a string, you can change it to anything, including GOLD or IBM. The reason I made this string and check is so we know what currency and timeframe settings are created for. If someone wants to use nonstandard timeframe and currency, it probably won't work so we toss up an error. To fix the error, change the settings to your current values. I think I report "current values" to make that easier, but I just woke up. Late night debug sessions kill my sleep schedule. *yawn*

Edit: now that I'm awake, I realized the intent of the question better. Next version (release time later today) should treat USDCHF and USDCHFm the same.