Workstation OS packages and Conda environment packages were both updated around 1330 UTC. These updates triggered a latent bug in the conda startup code that prevented graphical login to the workstations. This was cleared up by patching the conda startup code at around 1545 UTC.
The following conda packages were updated:
cds-crtools -> 4.0.2
* Higher precision cursor readouts for diaggui and foton.
* arbitrary awgstream memory leak fixed
* improved stability when reading live data from NDS2 servers
Complete change history is here: https://git.ligo.org/cds/software/dtt/-/wikis/ChangeHistory
dttxml -> 1.1.7
* Some transfer functions which could not previously be exported can now be exported.