At least in my experience, I have this same problem, and am unable to download modules. I cannot say for sure it is due to module manager not starting, but seems like may be related.
As in OP comments, I immediately checked for and downloaded updates (as instructed). This updated my firmware from v1 to v2. I could not download modules and modulemanager wouldn't start.
Since I could not download modules, I followed instructions on the wiki and reflashed. I am running version 2 as downloaded from downloads.lanturtle.com.
I successfully:
-Acquire IP Address
-SSH to Turtle
-Change Password
-Update Turtle from turtle shell
-Connect and view list of available modules
-Successfully reflash with latest firmware (though issues persist)
I cannot:
-Start the ModuleManager Service
​Selecting modules > modulemanager > start == screen indicating press OK or CTRL+C to exit...service does not start
Changing bootup status to "enabled" does not start the manager, even after performing above and/or rebooting
accessing lower-level shell and entering #start modulemanager provides a message "commands will be executed using /bin/sh" and a job is created, though modulemanager still does not run
-Download Modules
I navigate to modules > modulemanager > configure > directory > yes > [select any module, all are displayed] == message "installed modules:" and no modules are installed
I feel like this may be a firmware issue. I have a friend who received a turtle in same general time and did not update to v2. He is able to download and run modules without any problems.
Could we acquire have an official download made available of the old v1 of the firmware as a temporary fix/troublehsooting step?
Please advise, and thank you in advance for your help,