The Lightroom upload does not work.

Important info about the Lightroom plugin.

We are currently building a completely new picdrop Lightroom plugin - to give you more features and more reliable uploads.

The following instructions apply to the old Lightroom plugin, which can only be used with picdrop accounts registered before June 2022. More info on the new Lightroom plugin for picdrop can be found here.

List of error messages

Do you see get the error message

"An internal error has occurred: ?:0: attempt to call field 'AgNetIO' (a nil value)"

this is probably because you still have the old macOS Mojave operating system installed on your computer, but you are using a current version of Lightroom.

The Lightroom plugin can only be used on macOS Mojave up to Lightroom version 10.2. Please update your computer to a newer operating system or downgrade to Lightroom 10.2 or older.


Do you see one of the following error messages?

Unable to upload because Lightroom cannot ascertain if the target destination exists.


“The specified FTP preset is incomplete and cannot be used.”

In most cases these messages are caused by incorrect login credentials or FTP settings. To eliminate these errors please follow this checklist step by step. Even if some of the steps seem trivial or funny to you.

  1. Make sure that you really entered as the server and not just

  2. Make sure you have entered your username correctly. You can find the username here.

  3. When exporting files from Lightroom, make sure you selected "PicDrop" in the "Target Server" section (at the bottom). Please read our installation instructions very, very carefully, as such important details can be quickly overlooked.

  4. Please change your password in your picdrop account settings and then adjust the FTP settings in Lightroom. (Do not forget to save!) This option prevents typing and copying errors.

  5. Check if you use unusual special characters like "&" or similar in the gallery name. If so, please try it without this sign.

  6. Try to switch your connection from FTP (port 21) to SFTP (port 22), or vice versa if you already use SFTP. Please do not forget to save the settings.

  7. Make sure you are not using any form of firewall or programs such as "Little Snitch" that block your connection. Disable these for testing purposes to see if it works without them.

  8. Please test if another network/WLAN or a hotspot through your mobile phone is solving the problem, so you can be sure that it is not your network that is blocking the upload.

Still not working?

In this case, it is very likely that your ISP has blocked the FTP Port. This is occasionally the case in public WLANs, in hotels and holiday homes, at airports etc... Or a bad Internet provider. Some providers want to prevent the misuse of "their" Internet connection, but unfortunately also block serious services such as your upload. Please try SFTP and port 22 (see point 6).

An alternative?

Have you already looked for another internet connection or just tested it with friends, colleagues or neighbors? We also recommend that you upload via your browser. This cannot be blocked and thanks to our convenient drag & drop upload this should be very easy for you. If none of this works, just write us at and we'll see how we can help you.