Good read Matt. Thanks!
Morten
> Den 18. marts 2016 klokken 22:15 skrev Matt Lind :
>
>
> I dealt with this issue quite heavily while working on wildstar. Mostly
> occurred in Softimage 7.5, but did experience a few in 2013 SP1.
>
> In our case, having undo level reset to zero meant there was a corruption
> somewhere in the user's default profile under
> C:\users\\Autodesk\Softimage_xxx. Renaming this folder and
> forcing Softimage to generate a new profile resolved the problem.
>
> After extensive digging into the problem and handling nearly a hundred
> cases, I tracked down the cause to faulty manipulation of the user
> preferences file (.prefs). Some tool(s) inside of Softimage corrupt this
> file and upon next restart of the application Softimage would not be able to
> parse it correctly inducing a lot of flakey behavior including crashing,
> file corruption, and resetting undo level to zero. Undo level at zero was a
> symptom, not the cause/problem. We didn't have any tools that reset the
> undo levels, but a few native Softimage tools do.
>
> Upon inspecting the .prefs files for affected users, the common thread I
> noticed is they each had tons of parameter values set in the file. By
> default this file is very sparse, but users migrating from one version of
> Softimage to another via the migration tool were the most common victims as
> the migrate tool would set an explicit value for every preference parameter
> in the migrated .prefs file causing it to become horribly bloated. Manually
> deleting data from the .prefs file was not a solution and often cause more
> problems. Replacing the .prefs file from another user profile was also not
> a solution as there are hidden backups and ties to other files in the
> profile that work together, hence why you rename your user profile and let
> Softimage generate a new one for you. In short, nipping and tucking worked
> in the short term, but within a month the user would be back at my desk with
> the same problem all over again.
>
> Animators were affected most by this problem. On a few occasions I
> witnessed it happening first hand. The victims typically relied heavily on
> workflows that performed many operations then followed them up with several
> consecutive undo operations, then rinse and repeat. If a crash occurred in
> that sequence (or scene saved in middle of such as sequence, such as with
> auto-save), the scene would get corrupted as well as the .prefs file, or
> more accurately, the hidden backup of the .prefs file. And this would
> trickle and propagate throughout the user's profile until it became a bigger
> problem, usually days later when the user couldn't work anymore.
>
> My suggestion is to rename your user profile folder and let Softimage
> generate a fresh one upon next restart. Then go into the user preferences
> and manually set the parameter values you like - and only those parameters.
> If you so much as change a parameter value in the preferences, even if you
> undo it later, it will be recorded in your .prefs file. So only touch those
> you need to touch. Do not use the migrate tool or other conveniences as
> that will only infect your fresh profile with data from the bad profile
> (behavior won't show up immediately, but it will eventually show up). Same
> rule applies for toolbars, layouts, and other customizations. for
> plugins/scripts, do not install them on toolbars as commands/buttons. Learn
> to make them into self-installing plugins and put them in an appropriate
> workgroup and menus.
>
>
> Matt
>
>
>
>
> Date: Fri, 18 Mar 2016 14:49:59 -
> From: "adrian wyer"
> Subject: 0 undo levels
>
>
> we have a random issue where occasionally a session will start with undo
> levels set to zero
>
>
>
> anyone seen this, and more importantly, stopped it from happening!?
>
>
>
> 2015 x64
>
>
>
> a
>
>
>
> Adrian Wyer
> Fluid Pictures
> 75-77 Margaret St.
> London
> W1W 8SY
> ++44(0) 207 580 0829
>
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