If you are a Mac user and your versions of Respondus LockDown Browser and Firefox version 8 are crashing, the cause may be a recent update to Java 6 (update 29) for Mac OS X. We are currently researching the problem and possible solutions. At this time, you cannot use the LockDown Browser on a Mac computer that has Java 6 (update 29) – you will need to use another computer. For Firefox version 8 users, please use another browser, such as Safari. We also recommend not installing Java 6 (update 29), if prompted as part of the Apple software update.