Some Studiometry users with UK and Custom date formats set in their system preferences have been encountering issues with their data. This is causing issues with recurring items, iCal data export, date filters, and other areas of the application.

We’ve been looking into this issue and we’re trying to figure out exactly what is happening. If you allow Studiometry to generate the dates (ie using the date selector) then the formatting will work fine. The problem that is previously entered dates and new user-entered dates may not be interpreted correctly because of the stricter rules that the new build (4.1 and newer) of Studiometry uses.

There are a couple temporary fixes currently available. The first is to fix your date/time settings in your system preferences so that they match the data you had in Studiometry previously. The screenshot below shows part of the issue, which is that the short date and medium date are two completely different (and incompatible) formats.

Another option is to manually fix the dates that are not matching your current date/time settings. Of course, this would only be a viable option if the problem is occurring in a very small number of items.