There's an update on Typica's development branch that causes the batch details window to not barf if you've somehow managed to create a batch record without a green coffee item. The result is less detailed, ugly, and half of the tabs don't work, but the most important features are there and there's enough information that a confused person can take a screen shot and I can tell them what went wrong. Thanks to @agudbrandson and @jflanders for providing the bug report and enough info to solve it.