Dear OpenSim Testers, A release candidate of OpenSim 2.4 has been placed on the downloads page of OpenSim under the package name "OpenSim Release Betas": OpenSim 2.4 Beta https://simtk.org/project/xml/downloads.xml?group_id=91#package_id363 Please give it a spin and reply to this list with a description of any issues you discover. We are planning a public release by the end of this week, so please get back to us as soon as possible with any problems. Currently, the release is available on Windows (VC8Pro, Mac 32 bit, Linux 32 bit). Building API programs/plugins require having he same VisualStudio version (VC9Pro, VC10Express coming up later this week). For specific testing activities, there is a list of tasks available at the google doc: https://docs.google.com/spreadsheet/ccc?key=0AhT3LstQWbe5dE9LSTV3dzlPZUF2Sjh... Feel free to pick any subset of these tasks. Let us know which tasks you have completed, by editing the google doc or responding to this list, so that efforts aren't duplicated. Installing the application, trying to continue your regular use of OpenSim, and reporting any issues would be a great help. You can also try the APIExample or building a plugin. If you attended the most recent OpenSim workshop and encountered issues, please check to see if they have been resolved in this release. The user guide posted there should be up to date. ***If you do find an issue or bug, please include the model, data, and setup files that produce the problem, and report the bug and severity on the BugReport sheet of the google doc.*** Thanks for your help and we look forward to your feedback. -Ayman On behalf of the OpenSim team