There are a number of people reporting (11/11/2014) that the update to the now default/main viewer Second Life Viewer 3.7.20 (296071) Oct 29 2014 10:40:27 (Second Life Project Snowstorm) has created problems. The viewer will not run. In most cases it crashes at VFS (Virtual File System) initialization.

I am running Second Life 3.7.20 (296355) Nov 3. It does not have the problem. It runs. But, we do not yet know if version 3.7.20 (296071) crashes on all computers or just some. Judging by the size of the response in the forum, a dozen or so, I would say just a few.
It is possible to run other versions of the viewer. The basic trick to being able to install a different version of the viewer is to enable automatic update and ‘Willing to update to release candidate.’ If not enabled, the viewer will attempt to download and install the main viewer ASAP. The setting is in Preferences->Setup. The setting is also the default setting.
The active thread about this error is: Second_Life_3_7_20_296094_i686_Setup, is anyone else having an issue with this like me? The related JIRA is BUG-7776.
A Clean Install does not fix the problem. Dump version 3.7.20 (296071). Install a different version. You can find the Second Life RC (Release Candidate) Viewers and Project Viewers here.



