View Issue Details
| ID | Project | Category | Date Submitted | Last Update | |
|---|---|---|---|---|---|
| 0001656 | AI War 1 / Classic | Crash/Exception | Nov 28, 2010 10:55 pm | Nov 29, 2010 1:56 pm | |
| Reporter | Radlith | Assigned To | keith.lamothe | ||
| Status | resolved | Resolution | fixed | ||
| Product Version | 4.041 | ||||
| Summary | 0001656: Unhandled exception kills multiplayer session | ||||
| Description | While playing a 2 player game over the internet, the game stops and disconnects the other player. This has happened three times now, twice yesterday and once today, which corresponds to the three entries in the unhandled errors file. | ||||
| Tags | No tags attached. | ||||
| Internal Weight | |||||
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UnhandledErrors.txt (4,887 bytes)
11/27/2010 7:50:48 PM (4.041) ----------------------------------- UnhandledErrors----------------------------------- 11/27/2010 7:50:48 PM (4.041) -----------------------------------Error-----------------------------------Log String: FixedUpdate: System.NullReferenceException: Object reference not set to an instance of an object at (wrapper stelemref) object:stelemref (object,intptr,object) at System.Collections.Generic.List`1[ForegroundObject].Add (.ForegroundObject item) [0x00000] in <filename unknown>:0 at ForegroundObject.RunCollisionDetection (Boolean IsForRedirection, Boolean CollidesWithWormholes, Boolean UseCollisionPriorities) [0x00000] in <filename unknown>:0 at Game.RunOneCycleOfSimulation () [0x00000] in <filename unknown>:0 at Game.RunNextCycle (Boolean DoRendering) [0x00000] in <filename unknown>:0 at Game.RunFrame () [0x00000] in <filename unknown>:0 at MainCameraLogic.FixedUpdate () [0x00000] in <filename unknown>:0 Stack Trace: at (wrapper stelemref) object:stelemref (object,intptr,object) at System.Collections.Generic.List`1[ForegroundObject].Add (.ForegroundObject item) [0x00000] in <filename unknown>:0 at ForegroundObject.RunCollisionDetection (Boolean IsForRedirection, Boolean CollidesWithWormholes, Boolean UseCollisionPriorities) [0x00000] in <filename unknown>:0 at Game.RunOneCycleOfSimulation () [0x00000] in <filename unknown>:0 at Game.RunNextCycle (Boolean DoRendering) [0x00000] in <filename unknown>:0 at Game.RunFrame () [0x00000] in <filename unknown>:0 at MainCameraLogic.FixedUpdate () [0x00000] in <filename unknown>:0 11/27/2010 8:27:37 PM (4.041) ----------------------------------- UnhandledErrors----------------------------------- 11/27/2010 8:27:37 PM (4.041) -----------------------------------Error-----------------------------------Log String: FixedUpdate: System.NullReferenceException: Object reference not set to an instance of an object at (wrapper stelemref) object:stelemref (object,intptr,object) at System.Collections.Generic.List`1[ForegroundObject].Add (.ForegroundObject item) [0x00000] in <filename unknown>:0 at ForegroundObject.RunCollisionDetection (Boolean IsForRedirection, Boolean CollidesWithWormholes, Boolean UseCollisionPriorities) [0x00000] in <filename unknown>:0 at Game.RunOneCycleOfSimulation () [0x00000] in <filename unknown>:0 at Game.RunNextCycle (Boolean DoRendering) [0x00000] in <filename unknown>:0 at Game.RunFrame () [0x00000] in <filename unknown>:0 at MainCameraLogic.FixedUpdate () [0x00000] in <filename unknown>:0 Stack Trace: at (wrapper stelemref) object:stelemref (object,intptr,object) at System.Collections.Generic.List`1[ForegroundObject].Add (.ForegroundObject item) [0x00000] in <filename unknown>:0 at ForegroundObject.RunCollisionDetection (Boolean IsForRedirection, Boolean CollidesWithWormholes, Boolean UseCollisionPriorities) [0x00000] in <filename unknown>:0 at Game.RunOneCycleOfSimulation () [0x00000] in <filename unknown>:0 at Game.RunNextCycle (Boolean DoRendering) [0x00000] in <filename unknown>:0 at Game.RunFrame () [0x00000] in <filename unknown>:0 at MainCameraLogic.FixedUpdate () [0x00000] in <filename unknown>:0 11/28/2010 9:45:24 PM (4.041) ----------------------------------- UnhandledErrors----------------------------------- 11/28/2010 9:45:24 PM (4.041) -----------------------------------Error-----------------------------------Log String: FixedUpdate: System.NullReferenceException: Object reference not set to an instance of an object at (wrapper stelemref) object:stelemref (object,intptr,object) at System.Collections.Generic.List`1[ForegroundObject].Add (.ForegroundObject item) [0x00000] in <filename unknown>:0 at ForegroundObject.RunCollisionDetection (Boolean IsForRedirection, Boolean CollidesWithWormholes, Boolean UseCollisionPriorities) [0x00000] in <filename unknown>:0 at Game.RunOneCycleOfSimulation () [0x00000] in <filename unknown>:0 at Game.RunNextCycle (Boolean DoRendering) [0x00000] in <filename unknown>:0 at Game.RunFrame () [0x00000] in <filename unknown>:0 at MainCameraLogic.FixedUpdate () [0x00000] in <filename unknown>:0 Stack Trace: at (wrapper stelemref) object:stelemref (object,intptr,object) at System.Collections.Generic.List`1[ForegroundObject].Add (.ForegroundObject item) [0x00000] in <filename unknown>:0 at ForegroundObject.RunCollisionDetection (Boolean IsForRedirection, Boolean CollidesWithWormholes, Boolean UseCollisionPriorities) [0x00000] in <filename unknown>:0 at Game.RunOneCycleOfSimulation () [0x00000] in <filename unknown>:0 at Game.RunNextCycle (Boolean DoRendering) [0x00000] in <filename unknown>:0 at Game.RunFrame () [0x00000] in <filename unknown>:0 at MainCameraLogic.FixedUpdate () [0x00000] in <filename unknown>:0 |
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Can you post the save where this is happening? I'll take a look to see if I can find the Add call in question but without line numbers that can be tricky. If I can reproduce it with your save on my own machine I can get a lot more info. |
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Ok, I looked at the two Add calls in that method and neither can be dealing with a null parameter (in both cases the parameter is a local variable that is dereferenced in each possible preceding branch and is not used as an lvalue between those dereferences and the Add call). Googling turned up some mono bug reports though they looked a bit different and had no resolution (one guy had to update his video card drivers when hitting this in another unity game, but the code being hit here has nothing to do with graphics). Anyway, there isn't really anything I else I can do with this one without a save, but if you can get that to me I can try to reproduce the problem and dig more. |
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I've uploaded the save. Not sure if it'll help any, I suspect it's something really bizarre on my computer; we switched who was hosting and it went on fine. This save was about 9 minutes in, the other two times it happened, it happened right as an attack wave was about to come through, but it was able to load the save and continue with no problem... until the next attack wave came through. I'll try updating drivers and all of that, maybe something will help. |
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That's really bizarre that it would be machine-dependent. List<T>.Add is a _very_ commonly used method and the idea that it would be behaving differently on a different machine in even the slightest way is... well, surprising is a nice way to put it :) I suppose it's theoretically possible that you've got a different version of mono installed on your machine and the game is somehow using that external version of the System.Collections.Generic namespace. But that's really grasping at straws. Another remote possibility is that some other application on your computer is writing to memory that doesn't belong to it and nulling out a pointer somewhere in our app's memory. But that would be beyond bizarre for it to happen the same way three times. Anyway, I'm glad y'all were able to play by changing who was hosting. |
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Marking as resolved due to the extreme unlikelihood that I can even get the bug to happen for me, let alone fix it. Please do bug us again if you find it's actually preventing you from enjoying the game in some way (currently it sounds like you have a good workaround by having the other guy host). |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| Nov 28, 2010 10:55 pm | Radlith | New Issue | |
| Nov 28, 2010 10:55 pm | Radlith | File Added: UnhandledErrors.txt | |
| Nov 29, 2010 11:52 am | keith.lamothe | Note Added: 0004623 | |
| Nov 29, 2010 12:38 pm | keith.lamothe | Note Added: 0004625 | |
| Nov 29, 2010 12:38 pm | keith.lamothe | Assigned To | => keith.lamothe |
| Nov 29, 2010 12:38 pm | keith.lamothe | Status | new => feedback |
| Nov 29, 2010 1:30 pm | Radlith | File Added: MP crash.sav | |
| Nov 29, 2010 1:33 pm | Radlith | Note Added: 0004632 | |
| Nov 29, 2010 1:33 pm | Radlith | Status | feedback => assigned |
| Nov 29, 2010 1:43 pm | keith.lamothe | Note Added: 0004633 | |
| Nov 29, 2010 1:56 pm | keith.lamothe | Note Added: 0004635 | |
| Nov 29, 2010 1:56 pm | keith.lamothe | Status | assigned => resolved |
| Nov 29, 2010 1:56 pm | keith.lamothe | Resolution | open => fixed |
| Apr 14, 2014 9:27 am | Chris_McElligottPark | Category | Bug - Crash or Exception => Crash/Exception |
