Bukkit

What is the issue?
The items in showcases in my other world are being stored in the wrong chunks, spamming up my console.

Heres the error:
7:07:04 [INFO] [Showcase] Loading Showcase v0.7.9.
07:07:04 [WARNING] Wrong location for net.minecraft.server.EntityItem@1ac in world 'Japitaja'!
07:07:04 [WARNING] Entity is at -545.5,-928.5 (chunk -35,-59) but was stored in chunk -35,-58
07:07:04 [WARNING] Wrong location for net.minecraft.server.EntityItem@1d9 in world 'Japitaja'!
07:07:04 [WARNING] Entity is at 175.5,-1092.5 (chunk 10,-69) but was stored in chunk 11,-69
07:07:04 [WARNING] Wrong location for net.minecraft.server.EntityItem@219 in world 'Japitaja'!
07:07:04 [WARNING] Entity is at -279.5,63.5 (chunk -18,3) but was stored in chunk -18,4
07:07:04 [WARNING] Wrong location for net.minecraft.server.EntityItem@21a in world 'Japitaja'!
07:07:04 [WARNING] Entity is at -279.5,63.5 (chunk -18,3) but was stored in chunk -18,4
07:07:04 [WARNING] Wrong location for net.minecraft.server.EntityItem@225 in world 'Japitaja'!
07:07:04 [WARNING] Entity is at 293.5,-368.5 (chunk 18,-24) but was stored in chunk 18,-23
07:07:04 [WARNING] Wrong location for net.minecraft.server.EntityItem@226 in world 'Japitaja'!
07:07:04 [WARNING] Entity is at 291.5,-368.5 (chunk 18,-24) but was stored in chunk 18,-23
07:07:04 [INFO] [Showcase] Registered type [basic] (5 items loaded)
07:07:04 [INFO] [Showcase] Registered type [finite] (175 items loaded)
07:07:04 [INFO] [Showcase] Registered type [infinite] (5 items loaded)
07:07:04 [INFO] [Showcase] Registered type [exchange] (1 items loaded)
07:07:04 [INFO] [Showcase] Registered type [tutorial] (0 items loaded)
07:07:04 [INFO] [Showcase] version 0.7.9 has been enabled.

I am using Multiverse and Spout version 721.