Ender Storage in Deep Dark Prevents Server Start

The following error occurs when the server starts:

java.lang.NullPointerException
at codechicken.enderstorage.storage.item.TileEnderChest.reloadStorage(TileEnderChest.java:98)
at codechicken.enderstorage.common.TileFrequencyOwner.func_70312_q(TileFrequencyOwner.java:33)

It appears to be caused by the Ender Storage mod failing to load in the contents of Ender Storage containers in the Deep Dark (DIM-100). It is unclear if this always happens or if it is triggered by certain item ids being present. Ender Storage contents are saved in:

/world/EnderStorage/data1.dat

Editing this file using NBTExplorer and removing all the entries will let the server start again. However, this will remove all items from Ender Storage.