When you setup synchronization tasks to download from Dropbox to your local system or to upload files from your local system to Dropbox, you must unmap the file content on the Field Mapping tab. If you do not unmap the file content, the synchronization task cannot run as expected, an invalid data type conversion error appears.
1In Field Mapping Tab, select FileContent field.
2Click (clear expression/lookup) to unmap the FileContent.
(clear expression/lookup) to unmap the FileContent.