[Bugs] #1576 HIGH: Kaleidoscope, Breakout, StackAttack crash on relaunch in Sugar 0.84.7 (XO-1/F11)

[Sugar Labs Bugs]

#1576: Kaleidoscope, Breakout, StackAttack crash on relaunch  in Sugar 0.84.7
(XO-1/F11)
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    Reporter:  mavrothal  |          Owner:  bert                       
        Type:  defect     |         Status:  new                        
    Priority:  High       |      Milestone:  Unspecified by Release Team
   Component:  Etoys      |        Version:  0.84.x                     
    Severity:  Major      |       Keywords:                             
Distribution:  OLPC       |   Status_field:  New                        
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Changes (by bert):

  * priority:  Unspecified by Maintainer => High
  * severity:  Unspecified => Major
  * status_field:  Unconfirmed => New


Comment:

 Thanks for taking the time to report this. I'm sure others ran into this
 too.

 The activities don't actually "crash". You just get an annoying error on
 resuming. I tried Kaleidoscope. If you click cancel, then okay, then close
 the pink notifier, and right click to restore the screen, it is fine.

 Analysis: What happens is that on resume, the project is loaded twice.
 Once from the activity bundle, and once from the journal. The first load
 from the bundle succeeds. The second load from the datastore fails,
 because the first load triggered the security sand boxing, and the
 datastore delivers the file outside of the Etoys sandbox directory. This
 is because F11 does not have Rainbow enabled yet, so Etoys uses its own
 sand boxing for security. With Rainbow enabled, both loads do succeed
 (which is still wrong but no error gets shown).

 Solution: Simplest and safest is to prevent saving anything to the Journal
 when exiting such an activity, and also ignore any saved project when
 resuming.

 I opened an upstream ticket for this:
 http://tracker.squeakland.org/browse/SQ-604

 You may want to open a downstream ticket at http://dev.laptop.org/

-- 
Ticket URL: <http://bugs.sugarlabs.org/ticket/1576#comment:1>
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