Lease time has expired. How to take fee?

RKM on sign, and:
The field has no tennant
The field has no tennant
The field has no tennant

Rent is obtained to collect only before expiry.

PreciousStones version 9.7.0

In conjunction with the SimpleClans v2.5 does not work
/ps allow c:clan
/ps allow g:group
/ps allow t:town

New problem in version 9.7.0

Time on sign rent and shared not displayed.
When time end, player not removed from tenant list

RKM on sign:
Tenant: Player ()

Time in brackets is Null :(
this occurs, if at least one player in a different world

In console typed:
[00:43:28 WARN]: [PreciousStones] Task #998223 for PreciousStones v9.7.0 generated an exception
java.lang.IllegalArgumentException: Cannot measure distance between world_nether and world
at org.bukkit.Location.distanceSquared(Location.java:448) ~[CB.jar:git-Bukkit-1.7.2-R0.3-56-g3779cff-b3072jnks]
at org.bukkit.Location.distance(Location.java:431) ~[CB.jar:git-Bukkit-1.7.2-R0.3-56-g3779cff-b3072jnks]
at net.sacredlabyrinth.Phaed.PreciousStones.Helper.getClosestPlayer(Helper.java:934) ~[?:?]
at net.sacredlabyrinth.Phaed.PreciousStones.vectors.Field$Update.run(Field.java:3092) ~[?:?]
at org.bukkit.craftbukkit.v1_7_R3.scheduler.CraftTask.run(CraftTask.java:53) ~[CB.jar:git-Bukkit-1.7.2-R0.3-56-g3779cff-b3072jnks]
at org.bukkit.craftbukkit.v1_7_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:345) [CB.jar:git-Bukkit-1.7.2-R0.3-56-g3779cff-b3072jnks]
at net.minecraft.server.v1_7_R3.MinecraftServer.v(MinecraftServer.java:600) [CB.jar:git-Bukkit-1.7.2-R0.3-56-g3779cff-b3072jnks]
at net.minecraft.server.v1_7_R3.DedicatedServer.v(DedicatedServer.java:260) [CB.jar:git-Bukkit-1.7.2-R0.3-56-g3779cff-b3072jnks]
at net.minecraft.server.v1_7_R3.MinecraftServer.u(MinecraftServer.java:558) [CB.jar:git-Bukkit-1.7.2-R0.3-56-g3779cff-b3072jnks]
at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java:469) [CB.jar:git-Bukkit-1.7.2-R0.3-56-g3779cff-b3072jnks]
at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:628) [CB.jar:git-Bukkit-1.7.2-R0.3-56-g3779cff-b3072jnks]