Anacanda Mode Errors

[gderber]

Debugger entered--Lisp error: (wrong-type-argument listp stop)
company--prefix-len(stop)
company--multi-prefix((company-anaconda :with company-yasnippet))
company--multi-backend-adapter((company-anaconda :with company-yasnippet) prefix)
company--begin-new()
company--perform()
company-auto-begin()
company-idle-begin(# #<window 23 on filters.py> 34197 20503)
apply(company-idle-begin (# #<window 23 on filters.py> 34197 20503))
timer-event-handler([t 26346 51198 146783 nil company-idle-begin (# #<window 23 on filters.py> 34197 20503) nil 382000 nil])

[gderber]

Sometimes I get this message instead

Debugger entered--returning value: "Company: An error occurred in auto-begin"
message("Company: An error occurred in auto-begin")
company-auto-begin()
company-idle-begin(# #<window 57 on filters.py> 4770 13552)
apply(company-idle-begin (# #<window 57 on filters.py> 4770 13552))
timer-event-handler([t 26348 11598 430695 nil company-idle-begin (# #<window 57 on filters.py> 4770 13552) nil 378000 nil])