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Release Notes


Welcome to OpenSimulator, an open-source multi-user 3D virtual environment and metaverse server platform.

This is a minor release following on from 0.8.1. As such, it contains a single functional fix and no other changes. There are no database migrations.

As ever, OpenSimulator is a highly complex system. Various usage scenarios (standalone, grid, hypergrid, etc.) in combination with different dependencies (e.g. different versions of mono on Linux/Mac) can sometimes produce unexpected or unstable behaviour.

This release is compatible with the existing OpenSimulator 0.8 database without any migrations. There is some additional config in OpenSimDefaults.ini but if you have not changed this file (as is strong recommended) then you do not need to worry about these.

As this is a wiki page, please feel free to update it with more information about migration or other issues as and when these come to light.

You can download this release of OpenSimulator from http://opensimulator.org/wiki/Download

Known issues

  • No new issue since 0.8.1


OpenSimulator requires:

  • .NET Framework 4 when running under Windows.
  • At least Mono 2.8 when running under Mono (Linux or Mac). However, we recommend using at least Mono 2.10 as Mono 2.8.x has been reported as less stable in some situations when running OpenSimulator. Mono 3 has also been reported as working well with OpenSimulator.



  • This releases fixes a corruption occuring during outgoing object transfers. Please, see MANTIS 7514 for the original issue and MANTIS 7657 about mitigating database corruption caused by issue 7514. Note that this release does not repair assets in the database, nor prevent incoming corrupted objects to reach the database. It only stops the generation of new corrupt objects.


  • The configuration files in this release have not been "de-exemplified" as usual. Thus, it won't start out of the box. For standalone mode, you should first copy (or rename) StandaloneCommon.ini.example to StandaloneCommon.ini, OpenSim.ini.example to OpenSim.ini and edit the [Architecture] section.
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