Last weekend I got a mail from a Worktimer user, concerning a possible bug running Worktimer in the new Mac OS X Leopard. It happens when you open a document, and save it without making any changes. When you reopen the document all your data is lost.

Have been working day and night the last days trying to find the cause, unfortunately without any success. Now it turns out its in Leopard the bug is located, and it has to do with their Core Data framework (that Worktimer use).

Lets stay tune for Software Update from Apple, and meanwhile don’t double-save your document.

Read more about the bug here.