title: iPad Crash Type Unknown Monotouch
body: <p>I'm getting the following crash labeled as Type Unknown on an iPad using MonoTouch.  It generally happens after using the app for some time.  We have a Navigation Controller that is used to push and pop from 1 view to the next.  So basically, MainView->DetailView and back.  We can trigger this to occur by switching between views rapidly, but it will occur over time as well.</p>
  
  <pre><code>Hardware Model:      iPad3,1
  OS Version:          iPhone OS 6.0 (10A403)
  Kernel Version:      Darwin Kernel Version 13.0.0: Sun Aug 19 00:29:38 PDT 2012; root:xnu-2107.2.33~4/RELEASE_ARM_S5L8945X
  Date:                2012-09-27 16:19:58 -0700
  Time since snapshot: 112 ms
  
  Free pages:        4271
  Active pages:      41877
  Inactive pages:    27069
  Throttled pages:   137163
  Purgeable pages:   85899
  Wired pages:       36984
  Largest process:   TabletApp
  
  Processes
  Name                    &lt;UUID&gt;                       rpages       recent_max           [reason]          (state)
  
  BlueTool &lt;e0940958fde030c4983b25d7b4e2ad67&gt;          239              239                          (daemon) (idle)
  CommCenterClassi &lt;c82f228b14a830cdb88e3cc1068330b3&gt;          740              740                          (daemon) (idle)
  timed &lt;f3f0e010a9a13ae69b5761a5db3f4a3c&gt;          532              532                      (daemon) (idle)
  geod &lt;73e79779d11a312cb70c3770e494ceab&gt;          464              464                      (daemon) (idle)
  afcd &lt;b0aff2e7952e34a9882fec81a8dcdbb2&gt;          194              194                      (daemon) (idle)
  notification_pro &lt;845b7beebc8538ca9ceef731031983b7&gt;          242              242                      (daemon) (idle)
  mobile_assertion &lt;018ee854c7b6344ba5094f83827fee1c&gt;          249              249                      (daemon) (idle)
  afcd &lt;b0aff2e7952e34a9882fec81a8dcdbb2&gt;          211              211                      (daemon) (idle)
  coresymbolicatio &lt;edba67001f76313b992056c712153b4b&gt;          173              173                      (daemon) (idle)
  installd &lt;309cd72e8af43ad1b77d96274d0b0ff7&gt;          454              454                      (daemon) (idle)
  xpcd &lt;2190623b9f8033b3a3323e50385f952e&gt;          190              190                      (daemon) (idle)
  gamed &lt;5e2c4c3e9ef03bbba60e09baecc38a72&gt;         1155             1155                      (daemon) (idle)
  networkd_privile &lt;f8858e6f66af39ab8ce8f105cfa6872f&gt;          167              167                      (daemon) (idle)
  softwareupdatese &lt;2bc4b5ae016431c98d3b34f81027d0ae&gt;          678              678                      (daemon) (idle)
  deleted &lt;1135432740b43f699975b1fd8bffa05f&gt;          350              350                      (daemon) (idle)
  assetsd &lt;52be6deaa7cb326bb0b5a58cd43d3771&gt;         2439             2439                      (daemon) (idle)
  lsd &lt;6a9f5b5f36b23fc78f87b6d8f1f49a9d&gt;          596              596                      (daemon) (idle)
  AppleIDAuthAgent &lt;29029c5fc04736c99a0846fa84f03f3b&gt;          273              273                      (daemon) (idle)
  itunesstored &lt;4e0cd9f873de3435b4119c48b2d6d13d&gt;         1911             1911                      (daemon) (idle)
  accountsd &lt;ac0fce15c1a2350d951efc498d521ac7&gt;         1606             1606                      (daemon) (idle)
  MobileMail &lt;bff817c61ce33c85a43ea9a6c98c29f5&gt;         1932             1932                      (resume) (continuous)
  mstreamd &lt;b0ff7a57c8393a399b920e9fb6ba1ce3&gt;         1678             1678                      (daemon)
  kbd &lt;3e7136ddcefc3d77a01499db593466cd&gt;          871              871                      (daemon)
  tccd &lt;eb5ddcf533663f8d987d67cae6a4c4ea&gt;          239              239                      (daemon)
  TabletApp &lt;991649f8252c30fb880c779b532e2deb&gt;       166400           166400  [per-process-limit] (frontmost) (resume)
  mediaserverd &lt;80657170daca32c9b8f3a6b1faac43a2&gt;         2548             2548                      (daemon)
  locationd &lt;892cd1c9ffa43c99a82dba197be5f09e&gt;         1457             1457                      (daemon)
  wifid &lt;9472b090746237998cdbb9b34f090d0c&gt;          963              963                      (daemon)
  syslogd &lt;cbef142fa0a839f0885afb693fb169c3&gt;          409              409                      (daemon)
  iaptransportd &lt;f784f30dc09d32078d87b450e8113ef6&gt;          371              371                      (daemon)
  SpringBoard &lt;27372aae101f3bbc87804edc10314af3&gt;        18297            18297                     
  backboardd &lt;5037235f295b33eda98eb5c72c098858&gt;       129351           129351                      (daemon)
  fseventsd &lt;996cc4ca03793184aea8d781b55bce08&gt;         1173             1173                      (daemon)
  imagent &lt;1e68080947be352590ce96b7a1d07b2f&gt;          618              618                      (daemon)
  mDNSResponder &lt;3e557693f3073697a58da6d27a827d97&gt;          456              456                      (daemon)
  filecoordination &lt;fbab576f37a63b56a1039153fc1aa7d8&gt;          242              242                      (daemon)
  absinthed.J1 &lt;1143ac2f5558356f9e807c21457e999a&gt;          263              263                      (daemon)
  lockdownd &lt;ba1358c7a8003f1b91af7d5f58dd5bbe&gt;          560              560                      (daemon)
  powerd &lt;2d2ffed5e69638aeba1b92ef124ed861&gt;          333              333                      (daemon)
  eapolclient &lt;6fe4832769b3315c93072b4d0fed42b7&gt;          324              324                      (daemon)
  UserEventAgent &lt;6edfd8d8dba23187b05772dcdfc94f90&gt;          974              974                      (daemon)
  networkd &lt;0032f46009f53a6c80973fe153d1a588&gt;          345              345                      (daemon)
  aggregated &lt;8c3c991dc4153bc38aee1e841864d088&gt;          160              160                      (daemon)
  SCHelper &lt;2cb7ad29b9873115857da94ca4666547&gt;          257              257                      (daemon)
  BTServer &lt;c92fbd7488e63be99ec9dbd05824f5e5&gt;          777              777                      (daemon)
  configd &lt;4245d73a9e96360399452cf6b8671844&gt;          759              759                      (daemon)
  distnoted &lt;a89af76ec8633ac2bbe99bc2b7964bb0&gt;          292              292                      (daemon)
  fairplayd.J1 &lt;a39944b046c43c2a92bc1dff62ff04d3&gt;         1112             1112                      (daemon)
  apsd &lt;94d8051dd5f5362f82d775bc279ae608&gt;          601              601                      (daemon)
  notifyd &lt;51c0e03da8a93ac8a595442fcaac531f&gt;          213              213                      (daemon)
  **End**
  </code></pre>
  
  <p>Does any one know what this error could mean?  Any help appreciated, thanks.</p>