Error while bootstrapping

[Adde]

Tried make get-alpha to get the latest changes and got the following 
error while bootstrapping:

...
Loading 'src/mobius/repl.slate'
The following condition was signaled:
A suitable conversion method could not be found to convert between these 
two objects:

("RootedPath"  root: (traitsWindow. prototypes. globals. Mixins. Types. 
VM. systems))

No restarts are available.
Debug:

/Adde