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Armin

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Thursday, January 12th 2012, 10:52am

Beware Profile Danger

After reading about the official statement - NOT to use a Hexeditor to edit eg the profile names - I am shocked!

Not that I wanted to change my profiles with a hexeditor - but that editing a profile - and then using it chould render the KPA useless!

Why one earth is there no checksum in the files?
This would be one of the first things to be found during beta testing!

So beware if you get a profile from someone and he/she had edited it with a hexeditor before - this thing could blow your Kemper Amp!

Another danger ist that someone spread a "wanted profile" to harm a lot of KPA units!

Is there somewhere a list of all stock profiles? I want to erase all downloaded profiles until this problem is fixed!

This post has been edited 4 times, last edit by "Armin" (Jan 12th 2012, 11:38am)

guitarnet70

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Thursday, January 12th 2012, 11:14am

Don't panic, I have all available profiles to date, used them all, and no problem. The only profiles that have been shared by Rafport are the Bogner Alchemist ones

This issue is BTW by no extent a "Virus", is not replicating itself to other profiles or whatsoever, it is just a corrupted file that is creating problems.

sjaak

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Thursday, January 12th 2012, 11:14am

There will be quite a lot profiles coming in the future, thousands
Maybe an idea to put them on a special "Kemper approved" place on this forum

mDan

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Thursday, January 12th 2012, 11:20am

Btw... I did that hex editor edit too.
Without having any problems.

guitarnet70

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Thursday, January 12th 2012, 11:25am

Quoted from "mDan"

Btw... I did that hex editor edit too.
Without having any problems.
I've also been changing profile names on my PC...(though I've been using the good old "rename" function from Windows). No issues

Armin

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Thursday, January 12th 2012, 11:46am

Quoted from "guitarnet70"


...
This issue is BTW by no extent a "Virus", is not replicating itself to other profiles or whatsoever, it is just a corrupted file that is creating problems.


Yes, you are right - I changed the title - it's not a virus.

But if one corrupted profile could spoil the KPA - then it's very dangerous in both cases:
a) Someone shares this profile (or bundles of profiles) without the knowledge that someone has changed one or more of his profiles this way
b) Someone spread corrupted profiles to harm others (this is the idea of viruses btw)

So all I want is:
1) All profiles must have a checksum to prevent editing them.
Or even better as I suggested in another post:
Make the profiles XML with some editable parts (like names) and some encrypted and checksum protected parts for the simulation stuff

2) I have downloaded a lot of profiles and got some bundles from other users - and am now afraid that they can harm my KPA - so I want a list of the stock profiles.
Then I'll reset my KPA and install my own profiles in addition and am fine - until this thing is fixed.

3) As some posts above - a LOT of users have changed their profiles with a hex-editor yet.
So we need to know what could lead to this crashes.
Maybe the danger happens only after editing certain parameters of such a profile or whatever!

schneidas

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Thursday, January 12th 2012, 11:55am

I'm sure it is not a big prob, as I loaded the profiles in question as well and have zero problems yet (knocking on wood!).

But we really need an *official response* for these concearns.

mDan

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Thursday, January 12th 2012, 11:57am

Quoted from "Armin"

As some posts above - a LOT of users have changed their profiles with a hex-editor yet.


Actually I think that a LOT of users don't even know what a hex editor or a hex number is :D

guitarnet70

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Thursday, January 12th 2012, 11:59am

Quoted from "Armin"


Maybe the danger happens only after editing certain parameters of such a profile or whatever!
Or maybe have nothing to do with that...reality is that we don't know. All what we have is 1 user with not yet identified problem that possibly is coming from editing a profile with a Hex editor, and please note that the admin is saying: "not even to change the Name of the Profile", not that changing the name has caused the crash (very unlikely, IMHO), possibly he has edited parametrs or cab or whatsoever and used a wrong format...you can easily do that in windows as well if you make a mistake editing an .info or .sys or .dll file

guitarnet70

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Thursday, January 12th 2012, 12:01pm

Quoted from "mDan"

Quoted from "Armin"

As some posts above - a LOT of users have changed their profiles with a hex-editor yet.


Actually I think that a LOT of users don't even know what a hex editor or a hex number is :D
C'mon, they are guitarists, not drummers :D :D :D
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