Apple has just released another warning to Mac App Developers to make sure their Apps have 64-Bit functionality with the macOS. If you have installed High Sierra 10.13.4 you will see a warning when you launch a 32-Bit App. That is time to contact the App Developer to maker sure they are going to produce a 64-Bit version. Here is information from Apple’s website explaining the warning and the 64-Bit App transition. Just a word to the wise folks to make sure your mission critical Apps are going to continue to run for you.