Error Executing Database Query.

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org.postgresql.util.PSQLException: ERROR: invalid input syntax for integer: ""
  Position: 82
	at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2161)
	at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1890)
	at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:255)
	at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:559)
	at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:403)
	at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:395)
	at coldfusion.server.j2ee.sql.JRunStatement.execute(JRunStatement.java:265)
	at coldfusion.sql.Executive.executeQuery(Executive.java:1495)
	at coldfusion.sql.Executive.executeQuery(Executive.java:1235)
	at coldfusion.sql.Executive.executeQuery(Executive.java:1165)
	at coldfusion.sql.SqlImpl.execute(SqlImpl.java:406)
	at coldfusion.tagext.sql.QueryTag.executeQuery(QueryTag.java:1187)
	at coldfusion.tagext.sql.QueryTag.startQueryExecution(QueryTag.java:816)
	at coldfusion.tagext.sql.QueryTag.doEndTag(QueryTag.java:769)
	at cfindex2ecfm68228821._factor0(/home/www.active2gether.de/index.cfm:47)
	at cfindex2ecfm68228821._factor3(/home/www.active2gether.de/index.cfm:42)
	at cfindex2ecfm68228821._factor9(/home/www.active2gether.de/index.cfm:20)
	at cfindex2ecfm68228821.runPage(/home/www.active2gether.de/index.cfm:1)
	at coldfusion.runtime.CfJspPage.invoke(CfJspPage.java:246)
	at coldfusion.tagext.lang.IncludeTag.handlePageInvoke(IncludeTag.java:736)
	at coldfusion.tagext.lang.IncludeTag.doStartTag(IncludeTag.java:572)
	at coldfusion.filter.CfincludeFilter.invoke(CfincludeFilter.java:65)
	at coldfusion.filter.IpFilter.invoke(IpFilter.java:45)
	at coldfusion.filter.ApplicationFilter.invoke(ApplicationFilter.java:495)
	at coldfusion.filter.RequestMonitorFilter.invoke(RequestMonitorFilter.java:42)
	at coldfusion.filter.MonitoringFilter.invoke(MonitoringFilter.java:40)
	at coldfusion.filter.PathFilter.invoke(PathFilter.java:153)
	at coldfusion.filter.ExceptionFilter.invoke(ExceptionFilter.java:94)
	at coldfusion.filter.BrowserDebugFilter.invoke(BrowserDebugFilter.java:78)
	at coldfusion.filter.ClientScopePersistenceFilter.invoke(ClientScopePersistenceFilter.java:28)
	at coldfusion.filter.BrowserFilter.invoke(BrowserFilter.java:38)
	at coldfusion.filter.NoCacheFilter.invoke(NoCacheFilter.java:58)
	at coldfusion.filter.GlobalsFilter.invoke(GlobalsFilter.java:38)
	at coldfusion.filter.DatasourceFilter.invoke(DatasourceFilter.java:22)
	at coldfusion.filter.CachingFilter.invoke(CachingFilter.java:62)
	at coldfusion.CfmServlet.service(CfmServlet.java:219)
	at coldfusion.bootstrap.BootstrapServlet.service(BootstrapServlet.java:89)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at coldfusion.monitor.event.MonitoringServletFilter.doFilter(MonitoringServletFilter.java:42)
	at coldfusion.bootstrap.BootstrapFilter.doFilter(BootstrapFilter.java:46)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:218)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:506)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:466)
	at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:197)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:745)