I tried to dip a scroll into a potion of water and following error occured.

I bought this potion of water from shop and I think it is related with this. I had other potion of waters too and the new one does not just stack correctly.

After this error, all my food and scrolls are also missing...

----------------------------------------------------------------
A controlled JADE error occurred.
Please see the stack trace for details.

de.adom.jade.JadeError: Trying to add an item (0 potions of water) with an illegal item count: 0.
at de.adom.jade.items.MutableItemList.addItem(SourceFile:130)
at de.adom.jade.items.MutableItemList.recombineListRequiredFor(SourceFile:591)
at de.adom.jade.items.Inventory.getTotalWeight(SourceFile:112)
at de.adom.jade.beings.BurdenLevel.of(SourceFile:119)
at de.adom.jade.beings.Being.getBurdenLevel(SourceFile:5114)
at de.adom.jade.beings.Being.getSpeed(SourceFile:1317)
at de.adom.jade.beings.Being.resetUsedActionEnergy(SourceFile:1225)
at de.adom.jade.beings.Being.actImpl(SourceFile:813)
at de.adom.jade.kernel.actors.AbstractActor.act(SourceFile:58)
at de.adom.jade.kernel.actors.ActorReference.act(SourceFile:60)
at de.adom.jade.kernel.GameLoop.run(SourceFile:110)

--- System information: ---

jnlpx.remove: 'null'
file.encoding.pkg: 'null'
java.home: 'null'
deployment.security.askgrantdialog.notinca: 'null'
deployment.repository.askdownloaddialog.show: 'null'
deployment.system.security.trusted.jssecerts: 'null'
deployment.console.startup.mode: 'null'
jnlpx.offline: 'null'
apple.awt.graphics.UseOpenGL: 'null'
java.endorsed.dirs: 'null'
deployment.security.sandbox.jnlp.enhanced: 'null'
deployment.system.security.blacklist: 'null'
deployment.javaws.concurrentDownloads: 'null'
deployment.security.sandbox.awtwarningwindow: 'null'
sun.os.patch.level: 'null'
java.vendor.url: 'null'
deployment.security.blacklist.check: 'null'
deployment.user.security.trusted.jssecacerts: 'null'
deployment.javaws.home.jnlp.url: 'null'
java.version: 'null'
deployment.javapi.trace.filename: 'null'
deployment.max.output.file.size: 'null'
java.vendor.url.bug: 'null'
deployment.user.security.trusted.cacerts: 'null'
java.protocol.handler.pkgs: 'null'
javaplugin.proxy.config.type: 'direct'
deployment.user.tmp: 'null'
user.name: 'null'
deployment.user.logdir: 'null'
sun.io.unicode.encoding: 'null'
deployment.browser.path: 'null'
deployment.cache.max.size: 'null'
sun.jnu.encoding: 'null'
java.runtime.name: 'null'
jnlpx.home: 'null'
deployment.system.security.trusted.publishers: 'null'
java.specification.name: 'null'
deployment.security.mixcode: 'null'
ftp.nonProxyHosts: 'null'
user.timezone: 'Europe/Tallinn'
deployment.security.SSLv3: 'null'
deployment.proxy.override.hosts: 'null'
path.separator: 'null'
deployment.javaws.installURL: 'null'
deployment.javaws.ssv.enabled: 'null'
jnlpx.heapsize: 'null'
file.encoding: 'null'
deployment.user.security.trusted.publishers: 'null'
socksNonProxyHosts: 'null'
deployment.javapi.log.filename: 'null'
deployment.user.cachedir: 'null'
deployment.browser.args: 'null'
deployment.javaws.cache.update: 'null'
deployment.security.validation.crl: 'null'
java.io.tmpdir: 'null'
deployment.version: 'null'
user.language: 'null'
line.separator: 'null'
apple.jnlp.app.url: 'null'
deployment.user.security.policy: 'null'
jnlpx.jvm: 'null'
java.vm.info: 'null'
java.vm.specification.name: 'null'
deployment.max.output.files: 'null'
deployment.update.mime.types: 'null'
deployment.security.browser.keystore.use: 'null'
deployment.security.jsse.hostmismatch.warning: 'null'
http.nonProxyHosts: 'null'
deployment.system.security.cacerts: 'null'
deployment.proxy.type: 'null'
deployment.user.security.trusted.jssecerts: 'null'
deployment.security.password.cache: 'null'
deployment.javaws.shortcut: 'null'
java.awt.printerjob: 'null'
deployment.security.https.warning.show: 'null'
deployment.javaws.autodownload: 'null'
deployment.proxy.bypass.local: 'null'
http.auth.serializeRequests: 'null'
gopherProxySet: 'null'
apple.awt.graphics.UseQuartz: 'null'
deployment.javaws.logFileName: 'null'
os.name: 'null'
java.specification.vendor: 'null'
deployment.javaws.uninstall.shortcut: 'null'
deployment.system.security.jssecacerts: 'null'
mrj.build: 'null'
deployment.system.security.oldcacerts: 'null'
java.vm.name: 'null'
java.quick.starter: 'null'
mrj.version: 'null'
deployment.security.askgrantdialog.show: 'null'
java.library.path: 'null'
java.class.version: 'null'
sun.awt.exception.handler: 'null'
deployment.control.panel.log: 'null'
deployment.system.security.trusted.clientauthcerts: 'null'
deployment.trace: 'null'
deployment.security.clientauth.keystore.auto: 'null'
deployment.security.validation.ocsp: 'null'
deployment.javapi.cache.update: 'null'
deployment.cache.jarcompression: 'null'
deployment.system.security.trusted.libraries: 'null'
deployment.security.validation.ocsp.publisher: 'null'
deployment.javaws.update.timeout: 'null'
sun.boot.library.path: 'null'
sun.management.compiler: 'null'
java.awt.graphicsenv: 'null'
deployment.user.extdir: 'null'
deployment.system.security.trusted.certs: 'null'
deployment.system.security.oldjssecacerts: 'null'
deployment.proxy.same: 'null'
deployment.security.authenticator: 'null'
deployment.javaws.traceFileName: 'null'
deployment.user.security.trusted.clientauthcerts: 'null'
java.vm.specification.version: 'null'
deployment.user.security.blacklist: 'null'
awt.toolkit: 'null'
sun.cpu.isalist: 'null'
java.ext.dirs: 'null'
os.version: 'null'
user.home: 'null'
deployment.user.security.trusted.certs: 'null'
trustProxy: 'null'
java.vm.vendor: 'null'
deployment.javapi.lifecycle.exception: 'null'
user.dir: 'null'
deployment.cache.enabled: 'null'
sun.cpu.endian: 'null'
deployment.security.notinca.warning: 'null'
deployment.javaws.splash.index: 'null'
java.vm.version: 'null'
deployment.security.trusted.policy: 'null'
java.class.path: 'null'
os.arch: 'null'
deployment.javapi.stop.timeout: 'null'
deployment.mime.types.use.default: 'null'
deployment.security.pretrust.list: 'null'
java.rmi.server.RMIClassLoaderSpi: 'null'
deployment.capture.mime.types: 'null'
javawebstart.version: 'null'
deployment.security.TLSv1: 'null'
deployment.jpi.mode.new: 'null'
deployment.javaws.muffin.max: 'null'
deployment.log: 'null'
https.protocols: 'null'
java.vm.specification.vendor: 'null'
file.separator: 'null'
java.runtime.version: 'null'
sun.boot.class.path: 'null'
java.security.policy: 'null'
deployment.user.security.trusted.libraries: 'null'
user.country: 'null'
deployment.security.expired.warning: 'null'
deployment.repository.enabled: 'null'
deployment.security.SSLv2Hello: 'null'
deployment.apple.java10.6.u7: 'null'
deployment.javapi.runtime.type: 'null'
deployment.javaws.associations: 'null'
java.vendor: 'null'
awt.nativeDoubleBuffering: 'null'
java.specification.version: 'null'
deployment.user.security.saved.credentials: 'null'
sun.arch.data.model: 'null'