Rout widget

I,m using rout widget that is wrote by rscheitlin , but I encounter these problems whith this widget:

1- when I click on the map for adding stop, it return this error:
Cannot perform query. Invalid query parameters.

Unable to find address for the specified location.


2-when I zoom on the map in 1:50000 scale I can add stop point but it can not solve the rout and never return any address.