Version v1.22.3 SQL error

[uncovery]

During startup, PEX throws this error:

[11:28:21] [pool-9-thread-1/ERROR]: [PermissionsEx] Error occurred with PermissionsEx! Please post it to http://git.io/X4EeRQ. Full error:
ru.tehkode.permissions.exceptions.PermissionBackendException: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Can't DROP 'unique'; check that column/key exists
at ru.tehkode.permissions.backends.sql.SQLBackend$1.performUpdate(SQLBackend.java:129)
at ru.tehkode.permissions.backends.PermissionBackend.performSchemaUpdate(PermissionBackend.java:90)
at ru.tehkode.permissions.backends.sql.SQLBackend.(SQLBackend.java:190)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at ru.tehkode.permissions.backends.PermissionBackend.getBackend(PermissionBackend.java:392)
at ru.tehkode.permissions.backends.PermissionBackend.getBackend(PermissionBackend.java:367)
at ru.tehkode.permissions.PermissionManager.createBackend(PermissionManager.java:713)
at ru.tehkode.permissions.PermissionManager.setBackend(PermissionManager.java:695)
at ru.tehkode.permissions.PermissionManager.initBackend(PermissionManager.java:772)
at ru.tehkode.permissions.PermissionManager.(PermissionManager.java:74)
at ru.tehkode.permissions.bukkit.PermissionsEx.onEnable(PermissionsEx.java:158)
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:316)
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:329)
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405)
at org.bukkit.craftbukkit.v1_7_R4.CraftServer.loadPlugin(CraftServer.java:476)
at org.bukkit.craftbukkit.v1_7_R4.CraftServer.enablePlugins(CraftServer.java:394)
at net.minecraft.server.v1_7_R4.MinecraftServer.n(MinecraftServer.java:360)
at net.minecraft.server.v1_7_R4.MinecraftServer.g(MinecraftServer.java:334)
at net.minecraft.server.v1_7_R4.MinecraftServer.a(MinecraftServer.java:290)
at net.minecraft.server.v1_7_R4.DedicatedServer.init(DedicatedServer.java:210)
at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:458)
at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628)
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Can't DROP 'unique'; check that column/key exists
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:407)
at com.mysql.jdbc.Util.getInstance(Util.java:382)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1052)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3593)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3525)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1986)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2140)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2626)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2111)
at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:1362)
at ru.tehkode.libs.org.apache.commons.dbcp.DelegatingPreparedStatement.execute(DelegatingPreparedStatement.java:172)
at ru.tehkode.libs.org.apache.commons.dbcp.DelegatingPreparedStatement.execute(DelegatingPreparedStatement.java:172)
at ru.tehkode.permissions.backends.sql.SQLBackend$1.performUpdate(SQLBackend.java:124)
... 24 more

[zml2008]

You're going to have to delete the duplicate schema-version row (with the lowest version) from the permissions table. This was a bug from pex 1.22.2.

[uncovery]

thanks, that fixed it.