This release rebuilds the viewer using 64bit address space. It is our hope that this will improve viewer stability, allow you to use more of the memory in your system (if you have more than 4GB), and possibly also improve performance.
There is no Linux viewer yet.
However, there are two Windows viewers, a 32-bit build and a 64-bit build.
If you use an HD 2000 or 3000 series video card on Windows 10, choose 32 bit
Otherwise, choose the one that matches your copy of Windows (if your computer can run 64bit, and most can, you will get better performance and fewer crashes running a 64 bit Windows and Viewer).
If you chose the wrong one, the viewer will upgrade you again the first time you run it to the correct one (if you think it made the wrong choice, please file a bug in jira). This build further refines the determination of what is "the best" platform for your system.
The Mac build does not support 32-bit Macs (this is permanent)
Video media (QuickTime) usually does not play (the media handling is now the same as the Windows viewer).
The volume of web based media (e.g. YouTube) doesn't change based on your distance from the source.
Resolved Issues
MAINT-4532 [Win10] Windows 10 improperly displays as Windows 8.1
MAINT-4744 Update Mac viewer to libc++ instead of libstdc++
MAINT-5365 Windows viewer uninstall icon is system default not SL logo
MAINT-6116 On CEF viewers, the console window that opens on top of the world view should be hidden.
MAINT-6379 Remove support for RC4 from Mac internal browser
MAINT-6926 [VMP] Launcher throws exception when it can't create a log file.
MAINT-6928 [VMP] Viewer 5.1.0.503871 doesn't start on macOS with Python 2.6.6
MAINT-6950 [Windows] Shared media a great distance away (different region even) sometimes plays at maximum volume when entering a region or moving camera slightly.
MAINT-6995 [Project Alex Ivy] Changing login location at the login screen crashes the viewer
MAINT-6996 [Project Alex Ivy] Viewer memory use is reported incorrectly once memory use goes over ~ 4GB
MAINT-6997 [Project Alex Ivy] Persistant crash just after login right after "Making dummy class LLPanel named "gallery_panel" in outfit_gallery_tab"
MAINT-6998 [Project Alex Ivy] 64bit viewer installs to Program Files (x86) by default.
MAINT-7605 [VMP] Mac source viewer starts after user elects to install optional target viewer.
MAINT-7620 Downloaded target viewer doesn't overwrite source viewer performing UPDATER TESTING Part III for OSX for Second Life Release 5.1.0.507386 (64bit)
MAINT-7640 [Alex Ivy] When login is blocked due to required update, the viewer must notify the user
MAINT-7641 Detect when the viewer is launched directly and warn the user
MAINT-7658 [VMP] Win32_VideoController query returned = -2146959355
MAINT-7661 [VMP] Windows source viewer starts after user elects to install optional target viewer in the same channel.
MAINT-7742 Mac SL_Launcher should invoke the new .app, not its embedded viewer
MAINT-7748 NSIS installer leaves a "nsis.winstall" file after intalling a viewer.
SL-323 [VMP] Move update checking, download, and installation to the Viewer Manager Process
SL-617 [VMP] SL_Launcher should not exit until the viewer does
SL-619 Incorporate support for 64bit symbol dumps into the 64bit build process
