Environment:Windows. Viewer version 22.214.171.124
SLVersionChecker.exe is not copied from packages\VMP to the folder secondlife-bin.exe is created in. The viewer thus fails to start.
A temporary workaround is to supply
-set CmdLineSkipUpdater 1
as part of the startup switches.
A better, longer-term solution, would be to not run SLVersionChecker for self-compiled viewers running under the build folder as it makes no sense to check for a more recent viewer.