If you are using the Files Plugin Lotus Notes from the Greenhouse Solutions Catalog, you may be finding yourself being able to see and download all files in IBM Connections Files repository, but when trying to upload a file though, you might get an error message like that:
To solve that problem you need to add one line to Lotus Notes plugin-customization.ini:
Then save the ini-files, restart the Notes Client and the upload should be working now.
The plugins-customization.ini can be found in your Notes install directory/framework/rcp in Windows. Mac user right click the Notes.app icon and choose “Show package content”. Then they go to Contents/MacOS/rpc/ .