Migrated from: https://dev.bukkit.org/projects/shopkeepers/issues/362

Originally posted by stevenpferdberg (Jan 8, 2016):

Hi there,first of all thanks for making this amazing plugin, which we are happily using for over year on our server now. Much appreciated!We've run into an issue yesterday, when someone opened up a shop to sell various types of printed banners. After banners are being put up for a sale and are assigned a price (normal player shopkeeper), the next server restart (and all subsequent ones) gave the following error:http://pastebin.com/H82RNxE4We are using Bukkit 1.8 and Shopkeepers 1.68. We were using Shopkeepers 1.43 until yesterday. Upon encountering the problem, I removed all banners from stores, then upgraded to 1.68, but we still get the same problem.Any help would be greatly appreciated! Cheers from Cologne!

Originally commented by blablubbabc (Jan 8, 2016):

[at]stevenpferdberg:
Well, I assume that this is not an issue with shopkeepers at all, but with spigot. Basically shopkeepers is telling spigot 'save/load this banner item to/from config file'. Your version of spigot doesn't seem to be able to do that.. A different version of shopkeepers won't change that.
Maybe you can at least update spigot to a version past 4. december 2014 (so still pretty early 1.8 version of spigot). They changed/fixed banner serialization somewhere around there.

        Edited Jan 8, 2016

Originally commented by stevenpferdberg (Jan 9, 2016):

Hi there. See what you mean, thanks for the heads-up and the advice! Will try to update Spigot like you proposed.

Originally commented by blablubbabc (Jan 8, 2016):

Update your spigot as well. They changed how banner data gets saved (quite some time ago..).
You might have to either remove or manually fix your save file to get your old save file working:

Either remove all trades which currently involve banners.
Or you can try the following: Remove all "!!org.bukkit.DyeColor".

Originally commented by stevenpferdberg (Jan 8, 2016):

Thanks for the quick reply!
Sadly, we're stuck with Spigot 1.8 R0.1 (20141203) for now, as we have a couple of essential plugins that only run on that vesion.
Is there a Shopkeepers version that has maximum smooth compatibility with this Spigot version maybe?

Originally closed by blablubbabc (Jan 9, 2016)