I have 1133 rigs on mine and had no problems with the upgrade.
That's nothing I had over 2800 !!! lol
But it's been suggested that we shouldn't have more than 1000, so I'm still deleting to reach that #..before trying again...don't know how I'm going to be able to work with only 1000 profiles!!.. 
I got the same error recently too, due to too many profiles, and got it back working going back to previous firmware, now still deleting profiles till i reach less then 1000, and then will upgrade.
Long time ago i had a Roland GS-6 , it didn't sound very good, but was just 1 rack space and had at least 9 or 10 knobs, so a 2 space would be able to hold double that #, and still have a nice screen size, but not sure if it would work with the guts of the Kpa as it is now, probably would need a new design of the boards etc.
I'd vote for a 2 rack space, but with as many knobs etc as it has, I think it's possible to do if properly designed.
Update.. after a few hours of trying to figure out what's causing this problem I think I found it..it's coming from the "DEFINITION" parameter, and this explains to me why some heavy distorted patches have it, and others don't. With distortion profiles any setting higher the 3-4 depending on the amp, you start hearing it(at least I do) you start getting this weird overtone like on the clip i posted, so the trick is to try to keep the Definition as low as possible, while not destroying the patch.
It could be my KPA only, not sure, maybe some of you can try it, just go > Amplifier>Definition and try it with distortion patches.
DigitalTube (great name, btw.)
can you please contact me via pm?
send me the profiles that are giving you trouble, I'll record some stuff here.
This way we can take your recording setup/environment out of the equation.
thanks.
Thanks for looking into it. I'll do that sometime tomorrow when I return to the studio, I've ruled out cables, tried a few different ones, and besides if I play one profile that has it and next one doesn't how could it be the cable or even the recording process? It's on both the XLR outputs and Digital out, the recoding was of the digital out going directly to Digital Performer on a Mac. I've also tried turning off the gate, and effects and it's still there.
Again thanks for looking into it.
I can send them to you right now. have a backup on my Mac and remember some of the ones with problems, this way you can check it out asap..( sent you a PM)
I can hear it crystal clear both when your playing and in between notes its a constant noise that would irritate the hell out of me. I think its either (A) There's something wrong with your kemper (B) You have something causing interference to your Kemper. I have never heard this noise myself in any profile Ive tried. Have you tried other guitars and do they have the same problem? Do you play near a computer thats using WiFi?
I'm only talking about the noise when you first attack the note, it actually disappears before the sustain of the note dies, in between notes there is guitar hum because I turned off the Gate on the Kemper to make sure it wasn't related to the gate, i have tried 4 guitars , it would be impossible to be the guitar because like I mentioned before it's not in all profiles, some are very clean and don't have that noise even with lot's of distortion. The profiles either have it or don't, it's not like when I play them at different times they have it, and next day they don't.
[quote='Guitartone',index.php?page=Thread&postID=51626#post51626]Use the other 60% of the Profiles that don't have the "strange" noise you're hearing.
Not every guy sitting at home miking his amps is doing so under the same perfect 'studio' conditions that professional engineers are using.
I remember when I used to download "Patches" off the Line 6 patch exchange, 90% of the user 'patches' were horrendous.
You're doing well if 60% of the Kemper Profiles you've downloaded are good and not exhibiting any kind of strange behaviour....keep in mind, Kemper specifically allowed us the users to become engineers, but the Kemper can't control our skills or repair every stuff up we make.[/quote
I think you missing the point, the reason why i brought this up, and first contacted support and sent them the file was to help them identify the problem and hopefully correct it in some future firmware, they don't hear the problem, apparently no one else is hearing it so far, I hear this problem much more with a live PA, now the question is this, am i the only one who's hearing it as something that's ruining the profile? If it comes from different profiles done by different people then maybe there is something in the KPA that's causing it, and maybe they should look into it no? It's not a big deal for me, there are plenty of profiles without that problem. I posted it here because most people own the KPA and since Support doesn't hear a problem I wanted to have some people listen to it, maybe i'm imagining things, but I know I haven't seen any UFO's lately..
Are you using a noise gate? If so, it may just be the noise floor being "released" by the gate.
No noise gate that's why we hear the hum in between notes..
I'm not talking about hum in between notes, when you play the note it's right on top of it, besides the normal distortion sound there is this extra alias noise on top of it, the kind of sound you'd get when downgrading a file to a very low quality like 8 bit or something, you hear it as soon as you play the note, not so much when sustaining it, or in between notes(that's just hum, from being next to the computer, and not having the gate set)
This doesn't happen in all profiles some are completely clean without it, that's why I'm saying it's not my guitars or anything else or the regular hum you get with distortion, and it's not something that comes and goes away next time i play the same profile, so I don't think is anything wrong with the kpa, all I'm saying is some profiles end up with this weird overtone on it for some reason.
Recently I've been spending a lot of time deleting profiles to bring it down to less then 1000, in order to upgrade etc, and something I noticed from day one is really bothering me more and more about the sound of some profiles, this Does Not happen in all profiles, but a good 40% of them have it, there is this noise on top of the note, the note is there with distortion, but on top of it there is a noise almost like when you record to a cheap 8 bit recorder or something, and this happens with all my guitars, and with all effects on the KPA Off so it's not the guitar and like I said it's not in all profiles, any of you notice that on your KPA's? Here is a clip where I'm playing just low single notes with a few different profiles that have it, can some of you listen to it and tell me if you hear it, i've sent it to support and they checked it out and don't hear anything wrong, i hear it clearly on my studio speakers and much more on a PA system.
Please check it out and let me know, if i'm imagining things maybe I should quit the music business..
Thanks.
My fingers are tired, all afternoon deleting profiles one, by one... and still at around 1700... Ya we need a better/quicker way to do this.
If you can't get it working soon, just go to Guitar Center and buy 30 or 40 different amps and that should hold you off till you get 'er working again.
Last time i went to a GC I didn't see any "REAL" amps there, just toys for 12 year olds..
2800...I just don't get it.
What happened was I kept adding profiles, but never had the time to go thru them(was out most of the summer gigging) I really only use about 15-20 patches live with the Axe, there is no need for much more then that for me. I wanted to take my time and go thru all of them, just to see what's available and hear some amps i never had a chance to try.
Got it back working with the previous OS, will continue deleting profiles now, and then sometime will try the new firmware again, there is something i'm hearing on some profiles that I wanted to see if the new firmware would get rid of, so that was my main reason to try it.
Thanks guys, I'm pretty sure that's related to having a lot of rigs, I had already cut down from over 2800 to less then 2000.. Hopefully will get it running again later today when I get to the studio.
Thanks, I heard back from support, I also have a lot of rigs and that's probably the problem, i'll try to get it all fixed today.
Thanks.
I just got the same error message, did you get it solved?
I finally had some time to delete as many profiles as possible, did a backup, and upgraded to the latest Beta, at the end of the process got this error message and the unit is unusable, what to do next? any clues what it means? (will report to Support with pic and backup)
[Blocked Image: http://i1240.photobucket.com/albums/gg485/EBPhotoPlace/KPAErrorpictryingtoupgradeto15beta.jpg]
Quoted from "gharms"
<<The tweaking was overtaking my actual playing of the guitar / rehearsing. I am in a Contempory Christian Worship band. By the time I had tweaked to my satisfaction I had little time left to actually play & practice. I also found the Axe2 somewhat inconsistant in the sound that it put out. Sometimes it was shrill (ice picky) while other times it sounded great. That lead me to sell the Axe2 & all the associated gear. No regrets there.>>
Are you sure your ears aren't playing tricks on you?
Digital gear isn't inconsistent like tube amps, unless there was something wrong with your Axe, it sounds exactly the same every time you turn it on, same with the Kpa, if it sounded ice picky one day and fine the next day it's all in your mind..
Anyways glad you found what works for you, that is what's important.
