Switching templates is hard because that module position doesn't exist in the other templates. I don't know if there are different types of module positions that would make the module behave differently in one vs. another...
I actually bought this template specifically with the mailbox position in mind- so its been disappointing that they don't play nice together- but for some reason its only the uddie module.
If I put the module in the "left" module position but its the "top-equal" position I thats giving me that error