c# - NLog memory target error -

i have memory target , file target in nlog set this

<?xml version="1.0" encoding="utf-8" ?> <nlog  xmlns="http://www.nlog-project.org/schemas/nlog.xsd"   xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"   xsi:schemalocation="http://www.nlog-project.org/schemas/nlog.xsd nlog.xsd"   autoreload="true"   throwexceptions="true"   internalloglevel="off" internallogfile="d:\temp\nlog-internal.log">  <targets>     <target name="logfile" xsi:type="file" filename="file.txt" />     <target name="memory" xsi:type="memory"  layout="${level}|${time}|${message}"/> </targets>  <rules>     <logger name="*" minlevel="info" writeto="logfile" />     <logger name="*" minlevel="info" writeto="memory" /> </rules> </nlog> 

i memorytarget in constructor this

target = (memorytarget)nlog.logmanager.configuration.findtargetbyname("memory"); 

after access target's logs (still in constructor) , there couple of messages. after n amount of messages nlog stops writing messages memory target. more, if try target name in beggining returns null. after time , fiddling around nlog falls outofmemoryexception. file target works fine though. how can fix memorytarget not writing logs , deleting itself?

upd: looked @ nlog internal debug log , noticed @ point targets wiped. have main program nlog config , dll one. same , should not conflict each other. internal log here http://pastebin.com/m885xmbi

so problem conflict of nlog configs. had project functions nlog in them , wpf application uses project dll. though configs same nlog read first config , set targets, read second 1 apperently failed (i don't know, there no exception in nlog inner logs) , deleted targets. removing config dll project fixed problem