Open the ArtPro Action List with the ArtPro Action List Editor.
Verify every action which has a Root Folder setting. The root folder URL must start with file://. So, to correct the above example, change it to the below value:
file://192.168.17.98/your_folder_name
Also, make sure that your_folder_name references the folder which contains the TIFF files. You can use smart names to select the correct folder.