it appears that the problem was caused by the simulator launching in 4.3.2,
even though I had specified 5.0.  After manually switching it to the 5.0
runtime everything seems to be working again.

On Fri, Feb 17, 2012 at 2:18 PM, Jason Awbrey <[email protected]> wrote:

> I recreated this with a simple test app, so I've filed a bug
>
> https://bugzilla.xamarin.com/show_bug.cgi?id=3522
>
> On Fri, Feb 17, 2012 at 1:45 PM, Jason Awbrey <[email protected]> wrote:
>
>> tried that, and I also verified I was using SDK 5.0 - getting the same
>> error
>>
>> I'm going to try a small sample app to see if that has the same problem,
>> then I'll look at filing a bug
>>
>>
>> On Fri, Feb 17, 2012 at 1:33 PM, René Ruppert <
>> [email protected]> wrote:
>>
>>> I had a similar issue where clean did not help. The solution was to
>>> delete
>>> the "obj" folder of the project/solution manually. Then it worked.
>>>
>>> René
>>>
>>> -----Ursprüngliche Nachricht-----
>>> Von: [email protected]
>>> [mailto:[email protected]] Im Auftrag von Sebastien
>>> Pouliot
>>> Gesendet: Freitag, 17. Februar 2012 19:31
>>> An: Jason Awbrey
>>> Cc: Forums, MonoTouch
>>> Betreff: Re: [MonoTouch] crashing after installing latest beta
>>>
>>> Hello Jason,
>>>
>>> This can happen when there's a mismatch between the libraries used to
>>> build
>>> your application and the one used to deploy it (e.g. using the
>>> debugger). Is
>>> it possible that the solution was not cleaned/rebuilt after the update ?
>>>
>>> If a rebuild does not solve this can you open a bug report and attach the
>>> full build log ?
>>>
>>> Thanks!
>>> Sebastien
>>>
>>> On Fri, Feb 17, 2012 at 12:57 PM, Jason Awbrey <[email protected]> wrote:
>>> > I just installed the latest set of updates (beta channel) and the new
>>> > XCode release.
>>> >
>>> > Now when I run the app in the simulator, it is crashing as soon as I
>>> > click on anything.
>>> >
>>> > I've never seen the "checksum" error before - what is that telling me?
>>> >
>>> > app (403,0xaccd92c0) malloc: *** error for object 0x98a8774: incorrect
>>> > checksum for freed object - object was probably modified after being
>>> freed.
>>> > *** set a breakpoint in malloc_error_break to debug app
>>> > (403,0xaccd92c0) malloc: *** error for object 0x9e6c424: incorrect
>>> > checksum for freed object - object was probably modified after being
>>> freed.
>>> > *** set a breakpoint in malloc_error_break to debug app
>>> > (403,0xaccd92c0) malloc: *** error for object 0x9e6c3d4: incorrect
>>> > checksum for freed object - object was probably modified after being
>>> freed.
>>> > *** set a breakpoint in malloc_error_break to debug
>>> > Stacktrace:
>>> >
>>> >   at (wrapper managed-to-native)
>>> > MonoTouch.UIKit.UIApplication.UIApplicationMain
>>> > (int,string[],intptr,intptr) <0xffffffff>
>>> >   at app.UIKit.UIApplication.Main (string[],string,string) <0x000b7>
>>> >   at app.myApplication.Main (string[]) <0x00017>
>>> >   at (wrapper runtime-invoke) <Module>.runtime_invoke_void_object
>>> > (object,intptr,intptr,intptr) <0xffffffff>
>>> >
>>> > _______________________________________________
>>> > MonoTouch mailing list
>>> > [email protected]
>>> > http://lists.ximian.com/mailman/listinfo/monotouch
>>> >
>>> _______________________________________________
>>> MonoTouch mailing list
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>>>
>>>
>>
>
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