Power BI Integration - Data Update error

[AndyGilly]

Morning

i am revisiting the use of the power bi integration 

this morning when i have tried to refresh the version of the report that is being used i get the following error 

DataSource.Error: ADO.NET: R script error.
Error: Argument 'txt' must be a JSON string, URL or file.
Execution halted

Details:
    DataSourceKind=R
    DataSourcePath=R
    Message=R script error.
Error: Argument 'txt' must be a JSON string, URL or file.
Execution halted

appreciate any help

thanks

Andy

[AndyGilly]

fixed by using the most up to date script from the repository

thanks

Andy