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My first notion would be that you have the wrong version of HX Edit loaded. Were you working on HX Edit or the LT when this happened? Check 'Help' --> ' About HX Edit' in HX Edit and make sure your HX Edit version matches your firmware(3.11 hopefully). Load up the correct version of HX Edit if they are not properly matched. Don't forget to do a backup, global reset, and restore afterwards. If you do have the correct matched versions of the editor and the firmware you could also try a backup, global reset, and restore.

Helix, PC212+, Scarlett 18i20, Ext HD, Printer, Wireless Mouse, 4 MIDI controllers (KB, eDrums, nanoKontrol for DAWs, Grid controller for LIVE! - oh, yeah, I forgot the FCB1010 - that's 5 MIDI/11 USB total) . No monitors though. The Helix is connected to the PC212+ by L6 Link, and the PC212+ Outs are connected by XLR to the Scarlett. The Scarlett also connects back to the PC212+ to get amp sims into it. There's a G10 wireless connected to the Helix by 1/4" to AUX (for bass, main guitar is cabled to Guitar IN), and the G10 XLR goes to the Scarlett (for dry tracking and amp sims). Laptop audio out goes to the Scarlett also so I can get backing trax and streaming audio sources into the DAW. The Helix and Scarlett USB go straight to the laptop, everything else connects either to the powered hub or the USB C hub (regular USB ports connected to the laptop by C Port). The trick for me was to connect the external HD to the USB C hub and all the MIDI controllers and the Mouse dongle to the powered hub. Blessed silence! Naturally, after trying EVERY USB in EVERY port, with and without the Isolator, the ext HD to USB C hub was the last thing I tried.....

Cool. Problem solved. I didn't realize that Ritch was pressing (not toggling) when he was going from Essex and Comp to Placater. Thanks to both of you. Good to know what's up. I love this pedal. So cool!

You can have trails when switching snapshots to, for example a clean sound within a preset. The easiest method is using one of Helix's onboard delays and set the trails parameter on. If you rely on the Maxon in your loop for delay then per your post regarding your routing, if you switch to a snapshot that does not include the loop with the Maxon delay then of course you will be cutting of your trails as well. Perhaps there might be a way around this by putting the Maxon's loop on a parallel path so that when you switch to the clean snapshot you could turn only it's send off but leave the return on allowing the Maxon to continue sending any trails but not receiving any new signal in the clean preset. This might allow whatever was last sent in the previous high gain snapshot, before the switch to clean, to trail through. Don't know, have never tried anything like that.

This is a separate issue. When you have a USB ground loop issue, connecting the USB cable will result in a high pitched squeal which, when loud enough, resembles audio feedback. The solution for THAT issue (usually) lies in finding which of your connected USB devices are causing the ground loop. My suggested audio routing just gets the sound of the Spirit Amp into the recording/FOH chain and allows you to use Helix FX such as Global EQ/EQs/Compressors for post processing.

I assumed you were using L6 Link, which does not carry MIDI. L6 Link will, when the Powercab settings IN THE HELIX PRESET are set to SPEAKER/NATURAL, set that properly in the Powercab. Set that way, it's SUPPOSED to disable the HF Driver, but doesn't always do that. That's why you need to add a MIDI cable and use MIDI to FORCE the Powercab to do what you want. We're all hoping for an update/bug-fix, but L6 is stubbornly mute on the subject.

Global Settings>Footswitches>Stomp Select = Touch or Both You must be in STOMP MODE and EDIT. The FS will not TOGGLE by touch. TOUCH works as below. Setting Stomp Select to TOUCH or BOTH will SELECT (for editing) on TOUCH and TOGGLE on PRESS. Setting Stomp Select to PRESS TOGGLES on PRESS and on TOUCH selects whether the LED will be Dim or Lit when the device is in it's current state. OFF disables the TOUCH function. I thought that's what OFF meant. Apparently, it still sets the LED Status by touch, so I'm not sure what OFF means!

Troubleshooting steps in order: Check your cables. Try a different guitar. Make sure you're on the latest HX Edit. (not the cure, best practice) Do a Factory reset. (don't forget to BACK UP!) Use L6 Updater to re-flash the FW. FOLLOW THE DIRECTIONS INCLUDING FACTORY RESET AFTER REBOOT!!! Call support.

Not really.... physically loading down a guitar will be more reactive than simply setting an EQ. I think it's great that this "purist" option is available in the Helix. There were generally two ways people ran their traditional pedal boards... whether they new it or not. if you always had a buffered pedal at the front of your chain then your guitar ALWAYS see's that impendence regardless of whether or not it was on/off. This was the way the Helix was setup for AUTO by default. If you have True Bypass pedals at the front of the chain... then the impedance is changing all the time, depending on the first pedal that is turned on. This is the new "option" available on the Helix and will make the purist crowd much happier.... FWIW... I run wireless so none of this effects me in any way. I just set my input Impedance to 1M to avoid any surprises along the way.

On the contrary, snapshots are exactly what you want. Yes, you can...I do it all day long. Most of my patches have 2 amps... one clean, one dirty, and I toggle between them with snapshots. Yes, you can.

Each Snapshot supports up to 64 Parameter settings. You may define up to 8 Snapshots per Preset. This allows you to define as many blocks for two different amps and multiple FX within the same Preset. All subject to your DSP resources. So, Yes, using up to all four signal paths: 1A, 1B (of DSP Chip 1) and 2A and 2B (DSP Chip 2) you could place two amps into your signal chain in the same Preset with FX Blocks. The Snapshots excel by allowing you to Enable or Bypass as well as or alter any Blocks parameters you wish -- up to the maximum of 64 Parameters per Snapshot -- all within a single Preset. So, for example Snapshot 1 could have your clean blackface Fender amp enabled with any of the parameters set as you wish. Snapshot 2 could have your overdriven Marshall enabled with any of the paramters set as you wish, plus it would Bypass your blackface Fender Amp Block (or conceivably reduce to minimum the gain and channel Volume of that Fender Block whilst leaving the Block enabled). Depending on how you position the Amp and Cab Blocks in your signal chain and where you position your FX Blocks and when they are Enabled or Bypassed (or their respective parameters minimized or maxed) would be entirely up to you. The beauty of Helix's elegance is that you can do things in the box that are nearly impossible to do in the real world with ridiculous patching. There are very few rules. So if it sounds good, go with it. Your Amp Block placements may well be most beneficial to place in split paths of Signal chain 1 and your FX in Signal Path 2A and 2B. Depending on what cabs or IRs you plan to use this will also have an impact on your configuration. Remember you do not need to use the Combo Amp Blocks. You may use Amp Blocks and multiple cab blocks as you wish, and enable or disable them via Snapshots. Even though the above is a long depiction, it only scratches the surface of what you can do with the Helix. Hope this helps.

Congratulations on the new Helix! There have been a lot of enhancements since your last go. Until others here on the User Support Forums provide you more specific info, Snapshots (up to 8 of which may be defined within any Preset) are the way to go. They are incredibly powerful and flexible. You'll also want to explore enabling the Trails parameter of the FXs that you want to trail out. Also know that with most recent firmware version 3.11 you now have the option for Instantaneous Preset Switching. This is not precisely what you are asking, yet it is a recent and very powerful feature. Note, however, that this requires using all of the second DSP chip's resources so that you will not be able to use Signal Paths 2A and 2B. See the firmware 3.11 version Release Notes for more information on this. Also see HelixHelp.com for lots of helpful information.

I was going to mention this earlier, but forgot. You’ll need to go to Global Settings>Switches/Pedals>EXP1 Position and EXP 2 Position and make sure they’re both set to Per Preset or Global. If they’re set to Per Snapshot, the value of the parameters controlled by the pedals will be saved per snapshot. So that could be why you’re experiencing weirdness.

I actually think this setting was a welcome and extremely useful addition. I used to assign my impedance('Guitar In-Z) value to snapshots and switch it according to which block was the first active in the snapshot, so for me the 'First Enabled' option gave me an automated and more elegant solution, active in every preset/snapshot, that does not require additional snapshot editing.