Welcome to the forum. The DP-24/32/SD series is a very stable and error free platform. If you're unsure how to accomplish a task; If you're having difficulty with accomplishing a task; If you're experiencing error messages or SD card related issues; Then chances are the solution can be found in one of the technical stickies at the top of this forum ("sticky" topics are also known as "pinned" topics and have a pin icon). So as a new Forum member, I suggest, if you haven't yet done so, that you: Familiarize yourself with the Indexes in each of the technical sticky threads at the top of this forum. The answer to many common questions, as well as tips and techniques for advanced users, can be found in those sticky threads. The first post in each sticky thread has the Index to the posts in that thread. Update to the latest firmware and assure you're using a TASCAM tested/approved SD card. Doing so will assure you have the most efficient and effective means of using your DP-24/32/SD. You'll find more on that in the Equipment Tips sticky. Regularly back up the contents of the entire SD card. You may experience a failure that may cause the SD card to become unreadable. Also, SD cards do eventually wear out. Even if the technical stickies do not address your issue directly, chances are you can find a similar situation in the stickies to point you in the right direction (e.g. setting up a MIDI connection is basically the same for all MIDI devices; connecting outboard FX is the same for all types of outboard gear). If you can't find the answer to your question in the technical stickies, then feel free to start a thread in the general forum explaining your question (Please see How To Search The Forum in the next post below). When doing so: Please title the thread to clearly state the topic (e.g., DP-24SD Buttons Not Working); Let us know which sticky post(s) you’ve consulted. This will help assure a more timely and focused response from us, as we’ll know what you’ve already tried; Please be methodical and detailed in explaining your issue; and Please use the precise TASCAM terminology when describing the various knobs, buttons, buses, etc. associated with your question. For example, the DP series does not have “channels”: it has “Inputs A~H”; “Tracks 1~ 24”. Input A has a “Trim Knob”; Track 3 has a “Select Button”; Input A has a “Source Button”; etc. While anything less may be crystal clear to you, it will only serve to delay obtaining a resolution to your question while we obtain clarifications from you. And please let us know when you resolve your issue, and what the resolution was. We may want to add it to one of the stickies.