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IDProjectCategoryView StatusDate SubmittedLast Update
0008776opensim[REGION] OpenSim Corepublic2020-10-08 00:592020-10-08 07:01
Assigned To 
PlatformPCOSWindowsOS Version10
Product Version0.9.2.0 dev 
Target Version0.9.2.0 devFixed in Version 
Summary0008776: assetSystem.IO.IOException: An attempt was made to move the position before the beginning of the stream
DescriptionWhile a region (on DreamGrid with Hobbiton 3x3 OAR content) is starting up, on every occasion, I see this red error... it appears to be while the (Warp3D) map is generated. Reporting this in case its something that may have a fix. There are a lot of animated objects, NCs, etc in the region, and I am sure some of them will be active while the map is being generated.

2020-10-07 14:10:00,217 DEBUG [WORLD MAP]: Generating map image for Hobbiton

2020-10-07 14:11:58,251 Failed to decode mesh assetSystem.IO.IOException: An attempt was made to move the position before the beginning of the stream.
   at System.IO.MemoryStream.Seek(Int64 offset, SeekOrigin loc)
   at OpenMetaverse.StructuredData.OSDParser.DeserializeLLSDBinary(Stream stream)
   at OpenMetaverse.Assets.AssetMesh.Decode()

2020-10-07 14:13:55,044 DEBUG [WORLD MAP]: Storing map image b0f881bb-754a-4714-8bd7-b8b320aa9b23 for Hobbiton
TagsNo tags attached.
Git Revision or version 2020-09-21 20:40:24
Run Mode Grid (Multiple Regions per Sim)
Physics EngineBulletSim
Script EngineYEngine
Environment.NET / Windows64
Mono VersionNone
Attached Files

- Relationships

-  Notes
tampa (reporter)
2020-10-08 02:25

Switching map modules it goes away?
Does it happen with master code as well?
Mesh decode can be really spotty, you can enable some additional information lines in code if you need more info on what it is failing on. That may help at least figuring out which object that is, though given the error it may not be aware at all.
UbitUmarov (administrator)
2020-10-08 06:05

sounds like a defective mesh asset
aiaustin (developer)
2020-10-08 06:42
edited on: 2020-10-08 06:42

But what about the move of position message?

@Tampa ... thanks, I can try a map option other than Warp3D. But that's nit the point. I was noting the error in case its something that might indicate an underlying issue. Its a minor issue as I stated. It does not stop the content being used.

The Hobbiton OAR though is limited by its license to use on DreamGrids.. which currently uses OpenSim from about a week ago, so its almost fully up to date with dev master.

UbitUmarov (administrator)
2020-10-08 07:01

internal decoding details..

- Issue History
Date Modified Username Field Change
2020-10-08 00:59 aiaustin New Issue
2020-10-08 02:25 tampa Note Added: 0036911
2020-10-08 06:05 UbitUmarov Note Added: 0036913
2020-10-08 06:42 aiaustin Note Added: 0036914
2020-10-08 06:42 aiaustin Note Edited: 0036914 View Revisions
2020-10-08 06:42 aiaustin Note Edited: 0036914 View Revisions
2020-10-08 07:01 UbitUmarov Note Added: 0036915

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