Hi Simon,

If you were to copy that python script within the Files Web Part of the same folder the Assay is in and change the path to point to it, does the same error appear?

Also, what are the permissions for the directory that fullTransformer.py resides in and the permissions of the actual script? Is the owner of the file or directory the same user that is running the Tomcat process? What about the group? Is the user the Tomcat process is running under in that group the directory or file is owned by? What are the Read-Write-Execute permissions set as on the file?

Regards,

Jon