Bukkit

What version of DynamicEconomy are you using?:
9.3

Try to explain how to arrive at the problem:
1)Started server 1.4.6 R0.3with plugin (multiple times)
2)Error after a few seconds

Please paste the error log, if any. (Also provide DynamicEconomy log)

8:21:54 PM [warning]  [DynamicEconomy] Task #80 for DynamicEconomy v.8.7 generated an exception
8:21:54 PM [javastacktrace] java.lang.NumberFormatException: For input string: "?"
8:21:54 PM [javastacktrace]     at sun.misc.FloatingDecimal.readJavaFormatString(Unknown Source)
8:21:54 PM [javastacktrace]     at java.lang.Double.valueOf(Unknown Source)
8:21:54 PM [javastacktrace]     at me.ksafin.DynamicEconomy.loan.dynamicInterest(loan.java:322)
8:21:54 PM [javastacktrace]     at me.ksafin.DynamicEconomy.DynamicEconomy$1.run(DynamicEconomy.java:564)
8:21:54 PM [javastacktrace]     at org.bukkit.craftbukkit.v1_4_6.scheduler.CraftTask.run(CraftTask.java:53)
8:21:54 PM [javastacktrace]     at org.bukkit.craftbukkit.v1_4_6.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:345)
8:21:54 PM [javastacktrace]     at net.minecraft.server.v1_4_6.MinecraftServer.r(MinecraftServer.java:530)
8:21:54 PM [javastacktrace]     at net.minecraft.server.v1_4_6.DedicatedServer.r(DedicatedServer.java:224)
8:21:54 PM [javastacktrace]     at net.minecraft.server.v1_4_6.MinecraftServer.q(MinecraftServer.java:494)
8:21:54 PM [javastacktrace]     at net.minecraft.server.v1_4_6.MinecraftServer.run(MinecraftServer.java:427)
8:21:54 PM [javastacktrace]     at net.minecraft.server.v1_4_6.ThreadServerApplication.run(SourceFile:849)

Seems to try to create a random event and fails. Server still works fine but just curious :)