Multiplayer - Cant use non-vanilla items

[JordanTheSperm]

Hey,

I downloaded a server and got it set up and played it for about 1 hour then I spawned a solar panel in and in my chat it said something like the Item ID does not exist and deleted the item, also when I place other non vanilla items down it makes them invisible and can not be picked up when destroyed

[theprolo]

Perhaps you have a block ID mismatch with the server. Try redownloading both.

[JordanTheSperm]

I just tryed it with the 1.0.9 server and it still doesnt work im going to try redownload the client now.

[JordanTheSperm]

Nope still does it.

[ArpheliorX]

Like Theprolo already mentioned: try to delete the "Voltz" folder in your /appdata/.techniclauncher (don't forget to back-up for saves though!), and let it redownload it.. Perhaps that'll fix it (or did you already try that?)