From jeremy.woodward at me.com  Wed Oct  6 17:44:59 2021
From: jeremy.woodward at me.com (Jeremy Woodward)
Date: Wed, 6 Oct 2021 14:44:59 -0700
Subject: alice-teacher Crashing on "older" apple computers.
In-Reply-To: <CAMDLx6E24neeuYYaYHfdJ7qJG=LBXucqOusZ0+H_e2CurQqeDQ@mail.gmail.com>
References: <CAAR8Rs8HGZJb=wU8zTc8E0oqAj8+qNqDjyj+kiRdUNDxtS=igQ@mail.gmail.com>
 <CAMDLx6E24neeuYYaYHfdJ7qJG=LBXucqOusZ0+H_e2CurQqeDQ@mail.gmail.com>
Message-ID: <E7DDAC17-F4DD-42F3-A825-506B18CC2FDE@me.com>

Hi Alice 3D instructors,

Does anyone here use Apple computers with Alice? I?ve seen crashes happen when certain objects are added - especially when ?too many? items are in a scene.

I can?t quite pen down why it happens.  I know a student with a 2010 MacBook Air had to limit the scene to about 3 items otherwise a 4th one would get the ?Queen of Hearts Exception?. A student with a 2015 iMac would crash if any bi-pedal object was added. 

My guess is that there is a specific memory limit esp on Apple computers for Alice. The only requirement on Alice?s page is a 1GB ram video card.  A 2010 MacBook Air only had 256MB of Video memory, so maybe that?s why?

Thanks!

Jeremy

From vanderhyde at sxu.edu  Thu Oct  7 10:17:26 2021
From: vanderhyde at sxu.edu (Vanderhyde, James)
Date: Thu, 7 Oct 2021 14:17:26 +0000
Subject: alice-teacher Crashing on "older" apple computers.
In-Reply-To: <E7DDAC17-F4DD-42F3-A825-506B18CC2FDE@me.com>
References: <CAAR8Rs8HGZJb=wU8zTc8E0oqAj8+qNqDjyj+kiRdUNDxtS=igQ@mail.gmail.com>
 <CAMDLx6E24neeuYYaYHfdJ7qJG=LBXucqOusZ0+H_e2CurQqeDQ@mail.gmail.com>
 <E7DDAC17-F4DD-42F3-A825-506B18CC2FDE@me.com>
Message-ID: <C9585CAA-E2EA-46A3-8C1F-53B548609FD0@sxu.edu>

Jeremy,

I think you are seeing two different problems. The 2015 iMac should not have any problem with Alice 3. (Are you using Alice 3?) I currently use a 2014 MacBook Pro for Alice 3 all the time. There are occasional crashes but nothing that severe. I guess there must be something wrong with the installation.

I don?t know about the 2010 MacBook Air. I don?t have any Macs that old to try. I had a 2012 MacBook Air a long time ago. I wasn?t using Alice 3 in those days in class, but I?m sure I tried it out at some point with that computer and didn?t see any problems.

James
?
James Vanderhyde
Associate Professor
Computer Science
Saint Xavier University
3700 W. 103rd St.
Chicago, IL 60655
773-298-3454

On Oct 6, 2021, at 4:44 PM, Jeremy Woodward via alice-teachers <alice-teachers at lists.andrew.cmu.edu<mailto:alice-teachers at lists.andrew.cmu.edu>> wrote:

[EXTERNAL EMAIL] CAUTION: This email originated from outside of the organization.

Hi Alice 3D instructors,

Does anyone here use Apple computers with Alice? I?ve seen crashes happen when certain objects are added - especially when ?too many? items are in a scene.

I can?t quite pen down why it happens.  I know a student with a 2010 MacBook Air had to limit the scene to about 3 items otherwise a 4th one would get the ?Queen of Hearts Exception?. A student with a 2015 iMac would crash if any bi-pedal object was added.

My guess is that there is a specific memory limit esp on Apple computers for Alice. The only requirement on Alice?s page is a 1GB ram video card.  A 2010 MacBook Air only had 256MB of Video memory, so maybe that?s why?

Thanks!

Jeremy
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From susanmrivas at gmail.com  Thu Oct  7 12:18:09 2021
From: susanmrivas at gmail.com (Susan Rivas)
Date: Thu, 7 Oct 2021 09:18:09 -0700
Subject: alice-teacher Crashing on "older" apple computers.
In-Reply-To: <E7DDAC17-F4DD-42F3-A825-506B18CC2FDE@me.com>
References: <CAAR8Rs8HGZJb=wU8zTc8E0oqAj8+qNqDjyj+kiRdUNDxtS=igQ@mail.gmail.com>
 <CAMDLx6E24neeuYYaYHfdJ7qJG=LBXucqOusZ0+H_e2CurQqeDQ@mail.gmail.com>
 <E7DDAC17-F4DD-42F3-A825-506B18CC2FDE@me.com>
Message-ID: <CAJVEFh4TxeSpPT4h2xLhTs9nYJKsML9XvxvO+oOSsjcfD4Kthg@mail.gmail.com>

Hi Jeremy,
Sorry that I can not recommend a fix for the problems, but I understand
your dilemma.
When I taught Alice 3.0 in 2018 in a Computer Lab of Mac Mini's I would
warn the students ahead of time, not to add too many objects
to their scenes. If their project crashed or did not open, their back-up
was inconsistent, mostly not working, but sometimes it did!
Maybe programmers can create a fix since Memory was definitely an issue.

Good-luck!
Take care,
Susan Rivas in Santa Cruz, CA


On Thu, Oct 7, 2021 at 4:53 AM Jeremy Woodward via alice-teachers <
alice-teachers at lists.andrew.cmu.edu> wrote:

> Hi Alice 3D instructors,
>
> Does anyone here use Apple computers with Alice? I?ve seen crashes happen
> when certain objects are added - especially when ?too many? items are in a
> scene.
>
> I can?t quite pen down why it happens.  I know a student with a 2010
> MacBook Air had to limit the scene to about 3 items otherwise a 4th one
> would get the ?Queen of Hearts Exception?. A student with a 2015 iMac would
> crash if any bi-pedal object was added.
>
> My guess is that there is a specific memory limit esp on Apple computers
> for Alice. The only requirement on Alice?s page is a 1GB ram video card.  A
> 2010 MacBook Air only had 256MB of Video memory, so maybe that?s why?
>
> Thanks!
>
> Jeremy
> _______________________________________________
> alice-teachers mailing list
> alice-teachers at lists.andrew.cmu.edu
> To change settings or unsubscribe visit:
> https://lists.andrew.cmu.edu/mailman/listinfo/alice-teachers



-- 
---
Susan Rivas[image: ?]
Educational Technology Consultant
(831) 818-7665
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From ewbrown at andrew.cmu.edu  Thu Oct 21 13:03:24 2021
From: ewbrown at andrew.cmu.edu (Eric Brown)
Date: Thu, 21 Oct 2021 10:03:24 -0700
Subject: alice-teacher Alice Team Needs Help - Have You Seen The Alice Say
	and Think Bug
Message-ID: <3B1A47FA-95B3-4034-B08D-4BF17F00178B@andrew.cmu.edu>

Dear All,

I hope this email finds everyone doing well.  I am writing because our latest windows release had some structural changes underlying that seem to have started reporting a new and unique bug.  We have only gotten information for it from our automated reporting system in Alice and are looking for contacts for anyone that is seeng it to help us figure out what s going on and validate our fix.  What we are seeing:

It is happening on worlds that use say and think.  It expresses itself when the play window is run and the error appears when the say or think bubble goes to disappear.  It then prompts an error window that does allow people to share it with us that has error info that starts with the following content:

com.jogamp.opengl.GLException: Method "glDeleteBuffers" not available
at jogamp.opengl.gl4.GL4bcImpl.glDeleteBuffers(GL4bcImpl.java:10228)

Alice will continue to run but the play window will be in a bad state and other things will happen.

The only way we have been able to reproduce this has been to run a windows machine in safe mode forcing the machine to fall back to default graphics drivers.  We are fairly certain this is not common practice for people so we are trying to figure out what may be happening out there in terms of a computer configuration that would be causing this same state.  If you or any of your students have experienced this bug on a windows machine with a world using say/think we would love to hear from you.  We have a fix that we believe addresses this.   We would love to test further with anyone who has been experiencing this before releasing it.  We apologize to anyone who has been running into this bug and are working hard to fix it and roll out that fix.

Sincerely,

Eric

From wbarnum at elmhurst205.org  Sun Oct 24 21:10:19 2021
From: wbarnum at elmhurst205.org (Barnum, William)
Date: Sun, 24 Oct 2021 20:10:19 -0500
Subject: alice-teacher Disney Imagination Campus 50 Teachers Celebration
Message-ID: <CAMDLx6GZG5kjk2gKtN22gjPvSMFk5U0cjEShGwCzQPF5m_zgiw@mail.gmail.com>

Hey all,

It might be cool for a bunch of Alice teachers to apply for Disney's
Imagination Campus 50 Teachers Celebration
<https://disney50teacherscontest.com/>.

Bill Barnum

-- 


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the property of the Board of Education of Elmhurst Community Unit School 
District 205.? It is intended only for the person(s) to whom it is 
addressed.? If you are not the intended recipient of this message, you are 
not authorized to read, print, retain, copy, disseminate, distribute, or 
use this message or any part thereof.? If you have received this message in 
error, please notify the sender immediately and delete all copies of this 
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record and may be subject to inspection or copying under the Illinois 
Freedom of Information Act (FOIA).

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From melanielam at cmu.edu  Tue Oct 26 13:49:46 2021
From: melanielam at cmu.edu (Melanie Lam)
Date: Tue, 26 Oct 2021 10:49:46 -0700
Subject: alice-teacher Alice 3 build 3.6.0.3 - fix for say/think error
Message-ID: <CAAuKJEHV8sQvf5RB3XVb_THvppVP-rJ16qfsvcUOXt=JTG6r0Q@mail.gmail.com>

Hi all,

We have a fix for a Windows bug that Eric described in an earlier email
triggered on some machines when using Say/Think procedures. We hope that
this has not caused too much disruption to your classes.  The build is up on
 https://www.alice.org/get-alice/alice-3/, grab it for Alice 3 or Alice 3
with netbeans plugin. Thanks for your patience and please reach out anytime
to let us know what you may encounter. My name is Melanie, I've just joined
the Alice team. Look forward to interacting more with everyone. Please also
take a minute to join our 'Alice Programming' Facebook group - for both
teachers and students.

Thanks,
Melanie

Here is the description of the error:

It is happening on worlds that use say and think.  It expresses itself
when the play window is run and the error appears when the say or
think bubble goes to disappear.  It then prompts an error window that
does allow people to share it with us that has error info that starts
with the following content:

com.jogamp.opengl.GLException: Method "glDeleteBuffers" not available
at jogamp.opengl.gl4.GL4bcImpl.glDeleteBuffers(GL4bcImpl.java:10228)

Alice will continue to run but the play window will be in a bad state
and other things will happen.
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