Unable to update / upload mods on the workshop?

[Ruddygreat]

I uploaded the mod i was working on fine and I managed to push one update to it, but now there just isn't a button to update the mod.
since then, I've started work on a second mod and I've had the same problem with there being no button to upload

[Canute]

Maybe similar to
https://ludeon.com/forums/index.php?topic=50879.0
?

[LWM]

Stupid question, maybe, but IS Steam actually running?  I've had Steam crash before while RimWorld continued to play.