Critical error

[A6lowe]

This seems to happen whenever I have been making a fair amount of progress.

It totally crashes my save data, and i have to restore from my last checkpoint. I've set Alice to remind me to save every few minutes so I don't have to restore from a long time ago, but it's still time consuming, and very annoying to lose my work at all.

If there any known fix for this problem, or will I just have to keep saving frequently?

An error has occurred while attempting to save your world.
This is a critical situation that needs to be dealt with immediately.

NOTE: Please check for a directory co-located with
your world named "Backups of <YourWorldNameHere>" which
should contain previously saved versions of your world.

We at the Alice Team apologize for any work you have lost

Please accept our sincerest apologies. The Alice Team.


Alice version: 2.2 02/10/2011

Throwable that caused the error:

java.lang.RuntimeException: Could not find ancestor: world, class: class edu.cmu.cs.stage3.alice.core.World
Key:
Details: 3D Text class edu.cmu.cs.stage3.alice.core.Text3D


at edu.cmu.cs.stage3.alice.core.Element.internalGetKe y(Element.java:776)

at edu.cmu.cs.stage3.alice.core.Element.getKey(Elemen t.java:791)

at edu.cmu.cs.stage3.alice.core.reference.DefaultRefe renceGenerator.generateReference(DefaultReferenceG enerator.java:39)

at edu.cmu.cs.stage3.alice.core.Property.encodeRefere nce(Property.java:651)

at edu.cmu.cs.stage3.alice.core.property.ObjectArrayP roperty.encodeObject(ObjectArrayProperty.java:155)

at edu.cmu.cs.stage3.alice.core.Property.encode(Prope rty.java:683)

at edu.cmu.cs.stage3.alice.core.Element.internalStore (Element.java:1670)

at edu.cmu.cs.stage3.alice.core.Element.store(Element .java:1768)

at edu.cmu.cs.stage3.alice.core.Element.store(Element .java:1781)

at edu.cmu.cs.stage3.alice.core.Element.store(Element .java:1784)

at edu.cmu.cs.stage3.alice.core.Element.store(Element .java:1816)

at edu.cmu.cs.stage3.alice.authoringtool.dialog.Store ElementProgressPane.construct(StoreElementProgress Pane.java:42)

at edu.cmu.cs.stage3.progress.ProgressPane$2.run(Prog ressPane.java:84)

at java.lang.Thread.run(Unknown Source)

[PANTHERSFAN17]

this acually happened to me in class today. i lost a lot of work and i have to remake it. im wondering how to fix this too...

[aikmin]

Is it just files with 3D texts, or you have seen similar error in other files. How big is the file and are you experiencing memory problems or slowness in the program?